Hello all, I currently have a 2001 GSR with the OEM exhaust system and had some questions about converting to a T1R exhaust setup. Has the B18C1 in it(no swaps done).

The plan is to order these:

T1R 4-2-1 Header

T1R Racing Convertor (USDM or JDM)

T1R Hi Power 63s exhaust system


First, with me having a GSR will everything bolt up correctly? I noticed some websites display it as being for 97-01 Type R Integras.

Secondly, would I use USDM, or the JDM racing convertor? I’ve read about people using JDM but haven’t read about anyone doing my set up on a GSR. Also with some websites calling for the exhaust being for a Type R, idk if it matter which one I should go with but want to order it right the first time.


Lastly, will anything need to be custom fabricated or what?


Thanks in advance!

But here’s the issue, there’s a USDM spec and JDM spec racing Convertor. So I’m confused as to which one I need to go with because they don’t have JDM or USDM catback systems, just a general one.

Also for the 94-99 GSR and 00-01 GSR, what was the differences as far as the exhaust? I’ve read the 00-01 GSR had the same exhaust as all other Integras except the 94-99.

THANK YOU!