E51 The E51 Catalytic Converter Problem

[Pixelpoker]

Awesome... thanks mate... I'll drop them a line. Do I need to get google to translate it to Japanese do you think?

probably worth doing both as i'm not sure how offensive google translate is with english > japanese

 

[Roger_K]

Nah just write it in English. They're pretty good

I've just drafted an email. I'll call a local Nissan dealer first, then email Japan if no cigar.

 

[Roger_K]

probably worth doing both as i'm not sure how offensive google translate is with english > japanese

I think I better just stick with English. The last think I want to do is risk google messing up the translation!
I'll also let you guys know what happened with the dealer tomorrow. Nite nite from down under.

 

[Roger_K]

OK an update...

Got a reply email from Japan, and asked me to forward email to Nissan Australia. Contacted my local dealer, had a chat, forwarded the email, now wait. Hopefully they will do these 2 recall items for me.

 

[Ravenspur6]

After reading all of these (well some of all of these posts) I'm a bit concerned. I have a 2005 E51 Rider Autech 2.5 v6. Checked the recall site and it only has 1 recall for 2006, no idea what it was for lol but it's marked as done . Does this mean I'm free of the CAT issues? Possibly relevant... my van has clocked up 180k km!

*going to have to read up on how to insert images smh

 

[Templar_]

Hi everyone

So I'm in a very upset state right now and pretty stressed. I brought my E51 to a mechanic in NZ today and explained very precisely that I wanted to take out the 2 rear catalytic converters, explaining what we all already know about the car being a quad cat and front breaking up blablabla

I came back and I realized they didn't do the rear cats but did front cats, they cut open the pipes, broke down the honeycomb, soldered everything back on, leaving the compression ring inside. The boss thought I was a morron and was sure the rear cats were just small resonators or something so decided to do the front thinking they were the only one. I had to ask him after the mistake was done to check the rear ones for him to realized he fucked up, but still never apologized.

I showed them I was pretty unhappy, I still had to pay 300NZD, thinking anyway decorinng the front cats was still a good thing as it's the source of the problem

Then I realized there was a rattle in the line, which seemed like the compression rings moving around (he assured me there was no honeycomb left at all but that they put the compression ring back in place). So the guy told me to come back tomorrow and they'll cut the rings and take them out, I'll tell them to make sure there is no honeycomb anymore in the line.

But now beside being worried they left some materials in there or that they fucked up something, I'm also worried that the car will fail emission tests (I'm in NZ and no idea how they do that)

Engine light didn't come off after driving for a bit, so that's one thing I'm a bit less worried about ...

Do you think emissions tests will be OK ?

Should I ask him to put some new front cats for free after he did the mistake ? Thing is, I'm afraid he's just gonna tell me to f*** off and I don't have time and money for this.

I almost regret getting into this ...

 

[LeStempy]

In the UK rear cats only will pass emissions, but it depends on the rules in NZ. If they are more strict then I couldn't be sure.

 

[Lize]

You could ask him to provide you with an emissions test to be sure its OK and if not you'll be in a better position to get them to sort it out now rather than trying to go back later.

 

[Sean.m]

THIS IS NOT FORUM LORE. THIS IS NOT A MYTH. THERE HAVE BEEN MANY DOCUMENTED INCIDENTS WHERE OWNERS HAVE HAD THEIR ENGINE BLOW UP BECAUSE OF THIS ISSUE. YOU HAVE BEEN WARNED.

CHECK OUT THIS THREAD FOR PROOF

LIST OF AFFECTED MEMBERS

The problem

A widely known issue with the Nissan Elgrand E51 is that the rear cats get blocked causing catastrophic
damage to the engine.

The problem starts with the fact that the E51 has a QUAD CAT SYSTEM. This means there is a PRIMARY and a SECONDARY catalytic converter on EACH BANK of the V6 engine.

The PRIMARY cats are the ROOT CAUSE of problem. Through use, after heating up and cooling down, they start to deteriorate. This happens with ANY ceramic catalytic converter when they reach the end of the their life. As the PRIMARY cats starts to break down and fall apart, the debris is pushed back through the exhaust. At this point, they come into contact with the SECONDARY cats, which creates a blockage.

As more and more of the PRIMARY falls apart, the blockage will prevent any exhaust gasses getting out. The exhaust gases (and dust particles) then build up pressure and go to the only place they can, back into the engine. It doesn't take a mechanic to know that if you put exhaust gas mixed with catalytic converter debris back into an engine, it's not going to last long.

So, that covers the problem, what can you do about it?

There are 3 main options.

1/ DECORE the SECONDARY CATS. This is a simple process. You remove the secondary cats, cut an opening in the top, smash the internals out, weld the opening shut again and re-fit them. This removes the point at which the debris from the PRIMARY cats will get stuck creating a blockage. The debris is just pushed out the back of the exhaust. THIS IS NOT A 100% SAFE OPTION. Debris can still trap itself within the primary cat or the mid box of the exhaust. Although removing the rear cars reduces the chances of catastrophic failure exponentially... it will not 100% stop it from happening.

2/ Remove the SECONDARY CATS. Same principle as option 1, but you remove the cats altogether and replace with a straight through pipe. This is more costly than option 1, BUT what it means is that when it comes to MOT time, you still have the cats to fit to the vehicle if there are ever any issues. As with option 1, this is not a 100% failsafe option for the same reason outlined above.

3/ By far the most expensive option, but still an availability if you have the funds to allow it. Replace the WHOLE system (Manifold back) with a custom made stainless exhaust with single stage, high flow metal sports cat. Dig deep for this one, but the noise will be worth it - This option will 100% remove the risk of damage caused by the standard catalytic converter failure problem.

REGARDLESS OF WHAT METHOD YOU CHOOSE - YOU MUST CHECK FOR DEBRIS FROM FAILING FRONT CATS AND INSPECT THEM BEFORE YOU MOVE FORWARD. IF THEY HAVE ALREADY STARTED TO DETERIORATE, YOU SHOULD HAVE THE WHOLE SYSTEM REPLACED AND THE ENGINE HEALTH CHECKED BY A PROFESSIONAL.​

But what about.......?

You will fail an MOT if you remove the rear cats and the tester knows they should be there. So if you do fit straight through pipes, keep the cats and then you can fit them again at a later date if you need to.
If you go for option 1, make sure the access hole is cut in the top of the cat so that the head shield will cover the weld when it's sealed up again. If the hole is on the bottom, and the tester can see that they have been tampered with, he'll fail it.

Emissions are NOT affected by removal of the secondary cats. They are only part of the system due to the strict "cold starting" emissions policies in Japan. In the UK the emissions test is done on a warm engine, and therefore the secondary cats serve ZERO purpose.

Is this legal?

I don't know what PC Plod can do about you removing/modifying the cats. But, if you tell an MOT tester that you have modified the cats in any way, and it fails, then technically the car is not road worthy. We know this is bollocks. It'll still pass the emissions test, it will still drive perfectly OK, and you have removed the risk of having your engine blow up when belting down the motorway at no more than 70 (of course).

The choice on what you do is up to you. Keep them if you want. But then every time you drive your E51 you will be wondering when the engine is going to blow up. I know from a personal point of view, I'd rather take the risk with the MOT tester than have catastrophic engine failure and a £4500 engine rebuild bill.

I heard about a Recall for this problem!?

The recall has NOTHING to do with this problem. All it will do is prolong the inevitable. The recall was put out to adjust the fuelling. If your car is subject to the recall, the engine map was putting too much fuel into the engine. This meant that excess fuel was getting blown out of the engine following combustion and then igniting in the exhaust system due to the heat. This meant that the exhaust was getting a lot hotter than it should causing premature deterioration of the primary cats.
With the recall in place, the engine will not overfuel... but it does not mean that the primary cats will not start to disintegrate over time.

There have been at least 2 instances that I know of where a car that was NOT on the recall list has had the engine fail because of blocked cats.

Why does this need doing?

Cars built for EU and UK roads are designed with the climate in mind. Therefore, as part of the manufacture process, there are treatments applied to the bare metal to prevent the chassis corroding. JDM cars are NOT done, because the climate in Japan is very different to ours.

The underseal is required to ensure that your car doesn't turn into a pile of rust over the winter. More importantly, because you are doing this AFTERMARKET, it is something that is seen as temporary, not permanent. The products applied will, over time, wear off or get damaged thus leaving untreated metal to come into contact with salt and moisture.

The better the product you use, the longer it's life. There may even be products out there that come with a "life of the car guarantee"... but I'm sure they'll cost more than £400!

With that in mind, discuss the options available with the garage you chose for your underseal and discuss repeat applications and how often they will be required. If they want your continued business, they will offer all options and tailor the service to your requirements and budget.

THIS IS NOT FORUM LORE. THIS IS NOT A MYTH. THERE HAVE BEEN MANY DOCUMENTED INCIDENTS WHERE OWNERS HAVE HAD THEIR ENGINE BLOW UP BECAUSE OF THIS ISSUE. YOU HAVE BEEN WARNED.

CHECK OUT THIS THREAD FOR PROOF

LIST OF AFFECTED MEMBERS

The problem

A widely known issue with the Nissan Elgrand E51 is that the rear cats get blocked causing catastrophic
damage to the engine.

The problem starts with the fact that the E51 has a QUAD CAT SYSTEM. This means there is a PRIMARY and a SECONDARY catalytic converter on EACH BANK of the V6 engine.

The PRIMARY cats are the ROOT CAUSE of problem. Through use, after heating up and cooling down, they start to deteriorate. This happens with ANY ceramic catalytic converter when they reach the end of the their life. As the PRIMARY cats starts to break down and fall apart, the debris is pushed back through the exhaust. At this point, they come into contact with the SECONDARY cats, which creates a blockage.

As more and more of the PRIMARY falls apart, the blockage will prevent any exhaust gasses getting out. The exhaust gases (and dust particles) then build up pressure and go to the only place they can, back into the engine. It doesn't take a mechanic to know that if you put exhaust gas mixed with catalytic converter debris back into an engine, it's not going to last long.

So, that covers the problem, what can you do about it?

There are 3 main options.

1/ DECORE the SECONDARY CATS. This is a simple process. You remove the secondary cats, cut an opening in the top, smash the internals out, weld the opening shut again and re-fit them. This removes the point at which the debris from the PRIMARY cats will get stuck creating a blockage. The debris is just pushed out the back of the exhaust. THIS IS NOT A 100% SAFE OPTION. Debris can still trap itself within the primary cat or the mid box of the exhaust. Although removing the rear cars reduces the chances of catastrophic failure exponentially... it will not 100% stop it from happening.

2/ Remove the SECONDARY CATS. Same principle as option 1, but you remove the cats altogether and replace with a straight through pipe. This is more costly than option 1, BUT what it means is that when it comes to MOT time, you still have the cats to fit to the vehicle if there are ever any issues. As with option 1, this is not a 100% failsafe option for the same reason outlined above.

3/ By far the most expensive option, but still an availability if you have the funds to allow it. Replace the WHOLE system (Manifold back) with a custom made stainless exhaust with single stage, high flow metal sports cat. Dig deep for this one, but the noise will be worth it - This option will 100% remove the risk of damage caused by the standard catalytic converter failure problem.

REGARDLESS OF WHAT METHOD YOU CHOOSE - YOU MUST CHECK FOR DEBRIS FROM FAILING FRONT CATS AND INSPECT THEM BEFORE YOU MOVE FORWARD. IF THEY HAVE ALREADY STARTED TO DETERIORATE, YOU SHOULD HAVE THE WHOLE SYSTEM REPLACED AND THE ENGINE HEALTH CHECKED BY A PROFESSIONAL.​

But what about.......?

You will fail an MOT if you remove the rear cats and the tester knows they should be there. So if you do fit straight through pipes, keep the cats and then you can fit them again at a later date if you need to.
If you go for option 1, make sure the access hole is cut in the top of the cat so that the head shield will cover the weld when it's sealed up again. If the hole is on the bottom, and the tester can see that they have been tampered with, he'll fail it.

Emissions are NOT affected by removal of the secondary cats. They are only part of the system due to the strict "cold starting" emissions policies in Japan. In the UK the emissions test is done on a warm engine, and therefore the secondary cats serve ZERO purpose.

Is this legal?

I don't know what PC Plod can do about you removing/modifying the cats. But, if you tell an MOT tester that you have modified the cats in any way, and it fails, then technically the car is not road worthy. We know this is bollocks. It'll still pass the emissions test, it will still drive perfectly OK, and you have removed the risk of having your engine blow up when belting down the motorway at no more than 70 (of course).

The choice on what you do is up to you. Keep them if you want. But then every time you drive your E51 you will be wondering when the engine is going to blow up. I know from a personal point of view, I'd rather take the risk with the MOT tester than have catastrophic engine failure and a £4500 engine rebuild bill.

I heard about a Recall for this problem!?

The recall has NOTHING to do with this problem. All it will do is prolong the inevitable. The recall was put out to adjust the fuelling. If your car is subject to the recall, the engine map was putting too much fuel into the engine. This meant that excess fuel was getting blown out of the engine following combustion and then igniting in the exhaust system due to the heat. This meant that the exhaust was getting a lot hotter than it should causing premature deterioration of the primary cats.
With the recall in place, the engine will not overfuel... but it does not mean that the primary cats will not start to disintegrate over time.

There have been at least 2 instances that I know of where a car that was NOT on the recall list has had the engine fail because of blocked cats.

Why does this need doing?

Cars built for EU and UK roads are designed with the climate in mind. Therefore, as part of the manufacture process, there are treatments applied to the bare metal to prevent the chassis corroding. JDM cars are NOT done, because the climate in Japan is very different to ours.

The underseal is required to ensure that your car doesn't turn into a pile of rust over the winter. More importantly, because you are doing this AFTERMARKET, it is something that is seen as temporary, not permanent. The products applied will, over time, wear off or get damaged thus leaving untreated metal to come into contact with salt and moisture.

The better the product you use, the longer it's life. There may even be products out there that come with a "life of the car guarantee"... but I'm sure they'll cost more than £400!

With that in mind, discuss the options available with the garage you chose for your underseal and discuss repeat applications and how often they will be required. If they want your continued business, they will offer all options and tailor the service to your requirements and budget.

THIS IS NOT FORUM LORE. THIS IS NOT A MYTH. THERE HAVE BEEN MANY DOCUMENTED INCIDENTS WHERE OWNERS HAVE HAD THEIR ENGINE BLOW UP BECAUSE OF THIS ISSUE. YOU HAVE BEEN WARNED.

CHECK OUT THIS THREAD FOR PROOF

LIST OF AFFECTED MEMBERS

The problem

A widely known issue with the Nissan Elgrand E51 is that the rear cats get blocked causing catastrophic
damage to the engine.

The problem starts with the fact that the E51 has a QUAD CAT SYSTEM. This means there is a PRIMARY and a SECONDARY catalytic converter on EACH BANK of the V6 engine.

The PRIMARY cats are the ROOT CAUSE of problem. Through use, after heating up and cooling down, they start to deteriorate. This happens with ANY ceramic catalytic converter when they reach the end of the their life. As the PRIMARY cats starts to break down and fall apart, the debris is pushed back through the exhaust. At this point, they come into contact with the SECONDARY cats, which creates a blockage.

As more and more of the PRIMARY falls apart, the blockage will prevent any exhaust gasses getting out. The exhaust gases (and dust particles) then build up pressure and go to the only place they can, back into the engine. It doesn't take a mechanic to know that if you put exhaust gas mixed with catalytic converter debris back into an engine, it's not going to last long.

So, that covers the problem, what can you do about it?

There are 3 main options.

1/ DECORE the SECONDARY CATS. This is a simple process. You remove the secondary cats, cut an opening in the top, smash the internals out, weld the opening shut again and re-fit them. This removes the point at which the debris from the PRIMARY cats will get stuck creating a blockage. The debris is just pushed out the back of the exhaust. THIS IS NOT A 100% SAFE OPTION. Debris can still trap itself within the primary cat or the mid box of the exhaust. Although removing the rear cars reduces the chances of catastrophic failure exponentially... it will not 100% stop it from happening.

2/ Remove the SECONDARY CATS. Same principle as option 1, but you remove the cats altogether and replace with a straight through pipe. This is more costly than option 1, BUT what it means is that when it comes to MOT time, you still have the cats to fit to the vehicle if there are ever any issues. As with option 1, this is not a 100% failsafe option for the same reason outlined above.

3/ By far the most expensive option, but still an availability if you have the funds to allow it. Replace the WHOLE system (Manifold back) with a custom made stainless exhaust with single stage, high flow metal sports cat. Dig deep for this one, but the noise will be worth it - This option will 100% remove the risk of damage caused by the standard catalytic converter failure problem.

REGARDLESS OF WHAT METHOD YOU CHOOSE - YOU MUST CHECK FOR DEBRIS FROM FAILING FRONT CATS AND INSPECT THEM BEFORE YOU MOVE FORWARD. IF THEY HAVE ALREADY STARTED TO DETERIORATE, YOU SHOULD HAVE THE WHOLE SYSTEM REPLACED AND THE ENGINE HEALTH CHECKED BY A PROFESSIONAL.​

But what about.......?

You will fail an MOT if you remove the rear cats and the tester knows they should be there. So if you do fit straight through pipes, keep the cats and then you can fit them again at a later date if you need to.
If you go for option 1, make sure the access hole is cut in the top of the cat so that the head shield will cover the weld when it's sealed up again. If the hole is on the bottom, and the tester can see that they have been tampered with, he'll fail it.

Emissions are NOT affected by removal of the secondary cats. They are only part of the system due to the strict "cold starting" emissions policies in Japan. In the UK the emissions test is done on a warm engine, and therefore the secondary cats serve ZERO purpose.

Is this legal?

I don't know what PC Plod can do about you removing/modifying the cats. But, if you tell an MOT tester that you have modified the cats in any way, and it fails, then technically the car is not road worthy. We know this is bollocks. It'll still pass the emissions test, it will still drive perfectly OK, and you have removed the risk of having your engine blow up when belting down the motorway at no more than 70 (of course).

The choice on what you do is up to you. Keep them if you want. But then every time you drive your E51 you will be wondering when the engine is going to blow up. I know from a personal point of view, I'd rather take the risk with the MOT tester than have catastrophic engine failure and a £4500 engine rebuild bill.

I heard about a Recall for this problem!?

The recall has NOTHING to do with this problem. All it will do is prolong the inevitable. The recall was put out to adjust the fuelling. If your car is subject to the recall, the engine map was putting too much fuel into the engine. This meant that excess fuel was getting blown out of the engine following combustion and then igniting in the exhaust system due to the heat. This meant that the exhaust was getting a lot hotter than it should causing premature deterioration of the primary cats.
With the recall in place, the engine will not overfuel... but it does not mean that the primary cats will not start to disintegrate over time.

There have been at least 2 instances that I know of where a car that was NOT on the recall list has had the engine fail because of blocked cats.

Why does this need doing?

Cars built for EU and UK roads are designed with the climate in mind. Therefore, as part of the manufacture process, there are treatments applied to the bare metal to prevent the chassis corroding. JDM cars are NOT done, because the climate in Japan is very different to ours.

The underseal is required to ensure that your car doesn't turn into a pile of rust over the winter. More importantly, because you are doing this AFTERMARKET, it is something that is seen as temporary, not permanent. The products applied will, over time, wear off or get damaged thus leaving untreated metal to come into contact with salt and moisture.

The better the product you use, the longer it's life. There may even be products out there that come with a "life of the car guarantee"... but I'm sure they'll cost more than £400!

With that in mind, discuss the options available with the garage you chose for your underseal and discuss repeat applications and how often they will be required. If they want your continued business, they will offer all options and tailor the service to your requirements and budget.

Good honest advice

 

[Templar_]

The story continues, so the guy cut the pipes again this morning to take out the metal rings which were rattling, and also told me he started decoring the rear cats aswel thinking he was doing me a favour. Wtf is wrong with people ..... He didn't even ask before

I asked him about emission tests (and double checked myself) there is no emission test being performed during MOT in NZ (yet!), only during initial inspection at registration of the vehicle. But I'm still fucking upset

So I'm left with only one cat now as I stopped him before he started decoring the second one, I hope it's going to be all good. Will it create any problem if the 2 exhaust lines are not "balanced" ?

 

[LeStempy]

I would say, if emissions aren't a problem the ditch the last cat also so you will then have a full free flowing exhaust.

 

[Lpgc]

The story continues, so the guy cut the pipes again this morning to take out the metal rings which were rattling, and also told me he started decoring the rear cats aswel thinking he was doing me a favour. Wtf is wrong with people ..... He didn't even ask before

I asked him about emission tests (and double checked myself) there is no emission test being performed during MOT in NZ (yet!), only during initial inspection at registration of the vehicle. But I'm still fucking upset

So I'm left with only one cat now as I stopped him before he started decoring the second one, I hope it's going to be all good. Will it create any problem if the 2 exhaust lines are not "balanced" ?

Doubt there'll be anything to notice due to inbalance.

You won't get an engine warning light on due to decats.

I would say, if emissions aren't a problem the ditch the last cat also so you will then have a full free flowing exhaust.

Agreed

 

[Reverend RobP]

The story continues, so the guy cut the pipes again this morning to take out the metal rings which were rattling, and also told me he started decoring the rear cats aswel thinking he was doing me a favour. Wtf is wrong with people ..... He didn't even ask before

I asked him about emission tests (and double checked myself) there is no emission test being performed during MOT in NZ (yet!), only during initial inspection at registration of the vehicle. But I'm still fucking upset

So I'm left with only one cat now as I stopped him before he started decoring the second one, I hope it's going to be all good. Will it create any problem if the 2 exhaust lines are not "balanced" ?

No i don't think it'll cause any problems only having one in one side. Though I get where you're coming from about it been imbalanced.
You're kind of left with option of finding a second hand rear cat to replace the one he started on. (Fairly straightforward job to replace if you can find one) or replace both rears with some aftermarket cats. But probably looking at a few hundred dollars to have them put in. Or just finish taking the last one out and leave with none if emissions aren't a problem over there

 

[Templar_]

Well I already told him to let the last one so...

 

[Roger_K]

Another update...

Looks like a local dealer is giving me the run around.
In the ned they tell me they can do the recalls because to quote:
"they can't connect their computers to foreign cars".

I called them on their BS and went in face to face, then they started telling me they needed authorsiation from Nissan Japan.
I showed them the email from Japan, and the dude said he would take it up with Nissan Australia again. I wait again.

He tried to tell me Nissan Australia said they never do recall work on imports. He went silent when I told him others have had it done.

I'm smelling some bullshit here.... maybe it's just this dealer.

 

[LeStempy]

Sounds like they just don't want to do it.

 

[Roger_K]

Sounds like they just don't want to do it.

To be honest, I don't think I want them to do it now either. I may go to another dealer. I don't want them to do it begrudgingly.

 

[Keith3762]

I have had this problem twice since august. The engine warning light appears in screen and the engine symbol on the dash board lights up. It is followed within 30mins ish by brief intermittent engine stuttering. This first happened abroad in august. A local Nissan dealer in Switzerland cleared the warning and said it was probably electronic. After returning to UK i got my local mechanic to check it but he said as warning had been cleared the diagnostic check didn't reveal anything. I have done 2000 miles since with no problems. On long journey to Scotland over Xmas the problem returned. However i managed to return to Essex without the car showing any further symptoms. Is this the start of Catalytic problems or is it something else? I have been putting various types of petrol in the car from E95 to E99 (depending on availability).

I had a similar issue with mine turned out to be the PCV valve

 

[Calfinm]

Hi everyone

So I'm in a very upset state right now and pretty stressed. I brought my E51 to a mechanic in NZ today and explained very precisely that I wanted to take out the 2 rear catalytic converters, explaining what we all already know about the car being a quad cat and front breaking up blablabla

I came back and I realized they didn't do the rear cats but did front cats, they cut open the pipes, broke down the honeycomb, soldered everything back on, leaving the compression ring inside. The boss thought I was a morron and was sure the rear cats were just small resonators or something so decided to do the front thinking they were the only one. I had to ask him after the mistake was done to check the rear ones for him to realized he fucked up, but still never apologized.

I showed them I was pretty unhappy, I still had to pay 300NZD, thinking anyway decorinng the front cats was still a good thing as it's the source of the problem

Then I realized there was a rattle in the line, which seemed like the compression rings moving around (he assured me there was no honeycomb left at all but that they put the compression ring back in place). So the guy told me to come back tomorrow and they'll cut the rings and take them out, I'll tell them to make sure there is no honeycomb anymore in the line.

But now beside being worried they left some materials in there or that they fucked up something, I'm also worried that the car will fail emission tests (I'm in NZ and no idea how they do that)

Engine light didn't come off after driving for a bit, so that's one thing I'm a bit less worried about ...

Do you think emissions tests will be OK ?

Should I ask him to put some new front cats for free after he did the mistake ? Thing is, I'm afraid he's just gonna tell me to f*** off and I don't have time and money for this.

I almost regret getting into this ...

Hi, I'm in nz. First of all no emissions test re wof here. Second I'm interested in where you got it done. I don't mind spending 300 bucks to get the front cats decored!

 

[Roger_K]

Hi, I'm in nz. First of all no emissions test re wof here. Second I'm interested in where you got it done. I don't mind spending 300 bucks to get the front cats decored!

Be aware if the front cats are de-cored, you may have an issue with the engine check light. You'd be better off getting the fronts replaced with high performance after market cats that won't break down if you're going to the trouble.