Downpipe reducer to stock TSI exhaust?

[MonkeyMD]

Can't find answer on here and probably a noob question.

Looking to get a downpipe and it seems most FWD MQB downpipes are listed to fit both GTI and TSI. How is this when Catback for Golf is 2.25" in diameter and GTI is 2.5". Do they come with an adapter for both?

And to the more important question.
If I get a 3" downpipe and want to mate it with stock 2.25" exhaust, do I need 3" outer diameter to 2.25" OD or 3" OD to 2.25" ID or something else?

Can I just get a generic reducer or does it have to be from downpipe manufacturer?

 

[aaronc7]

My IE downpipe just has something like this on the end of it...... here is a 2.25 version. You'd just need go get a matching clamp

https://www.amazon.com/yjracing-Uni...xhaust+reducer+3.0+2.25&qid=1586443460&sr=8-2

 

[acorazza]

I can't speak to the Golf sizing because I have a GTI but i just went through something similar. If you can get it from the manufacturer I would recommend going that route. The IE downpipe fitment was great but I bought it used and it didn't come with the original adapter because the seller used it with a 3 inch catback. IE doesn't stock the reducer seperately so I actually bought one from APR and then had it expanded but the combination was still too long and I had to take a little off of the catback side. The IE downpipe fitment was great but I bought it used and it didn't come with the adapter because the seller used a 3inch cutback with it originally.

Also it seems that APR lists the 1.8 catback as having a 60mm diameter so double check before buying the adapter.

Good luck.

 

[ZuMBLe]

Can't find answer on here and probably a noob question.

Looking to get a downpipe and it seems most FWD MQB downpipes are listed to fit both GTI and TSI. How is this when Catback for Golf is 2.25" in diameter and GTI is 2.5". Do they come with an adapter for both?

And to the more important question.
If I get a 3" downpipe and want to mate it with stock 2.25" exhaust, do I need 3" outer diameter to 2.25" OD or 3" OD to 2.25" ID or something else?

Can I just get a generic reducer or does it have to be from downpipe manufacturer?

This is what you need:

https://store.goapr.com/products/APR-Exhaust-Reducer-%2d-76mm-to-60mm-%2d-1.8T.html

 

[MonkeyMD]

I can't speak to the Golf sizing because I have a GTI but i just went through something similar. If you can get it from the manufacturer I would recommend going that route. IE doesn't stock the reducer seperately so I actually bought one from APR and then had it expanded but the combination was too long and I had to take a little off of the catback side.

Also it seems that APR lists the 1.8 catback as having a 60mm diameter so double check before buying the adapter.

Good luck.

This is what you need:

https://store.goapr.com/products/APR-Exhaust-Reducer-%2d-76mm-to-60mm-%2d-1.8T.html

Thanks. I'll just order the APR one.

 

[ZuMBLe]

Thanks. I'll just order the APR one.

I would get a new clamp also.

 

[MonkeyMD]

The downpipe I got comes with clamps. Do you recommend something different.

 

[GTI Jake]

Golf Tsi OEM exhaust is 2.38” aka 60mm

 

[ZuMBLe]

The downpipe I got comes with clamps. Do you recommend something different.

View attachment 169689

You'll need something like this:
https://www.amazon.com/gp/product/B06XSPTXWM
and

https://www.fcpeuro.com/products/audi-vw-exhaust-clamp-hjs-1k0253141t

 

[MonkeyMD]

You'll need something like this:
https://www.amazon.com/gp/product/B06XSPTXWM
and

https://www.fcpeuro.com/products/audi-vw-exhaust-clamp-hjs-1k0253141t

That says 60mm. Will I need a 60mm clamp and a 76mm clamp or are they universal. And I'll just need the 2, right?

 

[ZuMBLe]

The 76 mm clamp will connect the DP to the APR reducer. The 60mm clamp will connect the APR reducer to the factory exhaust.

@GTI Jake , what do you think of the clamps in @MonkeyMD 's pics vs the ones I linked?

 

[Scanner]

I have a 2018 TSI, now with stage 2 Unitronic and the Unitronic downpipe which came as a complete package (reducer, clamps). The fit was like OEM, easy install, great quality and results, however, more expensive than other brands. I'm very satisfied, in my opinion, the extra $ worth.

 

[GTIfan99]

In the Subaru side I've used cheap chinese downpipes and higher quality pieces. I can't say there was much performance difference, but there's something to be said for a well made, OEM fitting piece that you could use as a art piece. That's a nice looking DP.

 

[ZuMBLe]

I have a 2018 TSI, now with stage 2 Unitronic and the Unitronic downpipe which came as a complete package (reducer, clamps). The fit was like OEM, easy install, great quality and results, however, more expensive than other brands. I'm very satisfied, in my opinion, the extra $ worth.View attachment 169711View attachment 169712

V-Band reducer... nice....

 

[danbfree]

So what if the DP already reduces down to 65mm for GTI but need to use on a 60mm 1.8 exhaust? Will one of those 76m to 60mm reducers slip right over this end too?
OR, do I need to add one of THESE?