JerseyDrew's 2016 GTI S build, a.k.a. Jersey Devil

[JerseyDrew77]

I didn't see if you mentioned it but will that DP pass emissions? If no what do you do when you have an emissions test?

I've never had to do an emissions test while living in VA and my previous downpipe was catless. All they do is inspect the exhaust system.

 

[Gvazquez]

To be honest, the price. Even though he has a great welder, I just couldn't make myself spend that kind of money on a downpipe.

Now for the spool, I haven't logged anything yet to see how much better it is, but I would say anywhere from 300 - 500 rpms quicker.

Id be interested to see the difference in a log. I might switch to this downpipe to help spool on my setup but I already have bull x downpipe which is 3.5 at the start so it may not be as noticeable as what you see since you started with a 3in dp

 

[daconchslop]

Most all are reporting 300-500rpm sooner.

 

[El_bigote_AJ]

Most all are reporting 300-500rpm sooner.

Yup, mine was 5-600 easy.

https://www.golfmk7.com/forums/index.php?threads/downpipe-whats-the-best-brand.358816/post-7575656

 

[jimlloyd40]

Yup, mine was 5-600 easy.

https://www.golfmk7.com/forums/index.php?threads/downpipe-whats-the-best-brand.358816/post-7575656

Didyou have to retune it?

 

[daconchslop]

Didyou have to retune it?

You can if you want to adjust for spool but it’s not really needed.

 

[El_bigote_AJ]

Didyou have to retune it?

That was on the same tune.

I still have to install the MPI then we will be finishing up the tuning then.

 

[jimlloyd40]

That was on the same tune.

I still have to install the MPI then we will be finishing up the tuning then.

I know it spools sooner because of the 4" part. If I was to get the Cat version of the DP would that negate the earlier spool? I'm just tired of smelling the fumes from my no cat DP.

 

[MonkeyMD]

Id be interested to see the difference in a log. I might switch to this downpipe to help spool on my setup but I already have bull x downpipe which is 3.5 at the start so it may not be as noticeable as what you see since you started with a 3in dp

Sad that I have this dp and never realized it was 3.5". Just assumed they were all 3". Got it for the HJS cat

 

[The Dude]

I know it spools sooner because of the 4" part. If I was to get the Cat version of the DP would that negate the earlier spool? I'm just tired of smelling the fumes from my no cat DP.

Drive more, park less

 

[jimlloyd40]

Drive more, park less

I don't get that.
I'm already driving 8 hours per day.

I'm not sure if the smell is because of no cat or from my OCC.

 

[ChrisMk77]

Id be interested to see the difference in a log. I might switch to this downpipe to help spool on my setup but I already have bull x downpipe which is 3.5 at the start so it may not be as noticeable as what you see since you started with a 3in dp

If it is the catless with 3.5" bend then the difference is probably not that big. My Milltek has a 5" cat mounted close to the turbo and would probably spool late on a laggy hybrid.

I know it spools sooner because of the 4" part. If I was to get the Cat version of the DP would that negate the earlier spool? I'm just tired of smelling the fumes from my no cat DP.

I think trackslag mounts a 5" high quality cat down below so flow should not be an issue there, but since it wont see as much heat it would still smell more and might clog easier if you run that nasty orange octane booster compared to a big cat close to the turbo. Mine smells on cold start aswell but not after that.

 

[El_bigote_AJ]

Honestly going from the hiflow cat to catless , I’m not noticing any smells, but could be in part that I’m on E55-60 right now

 

[Diggs24]

My kid says it smells like baking bread.

 

[daconchslop]

Corn bread.