GSR Header Compatibility

UMR Racer · Post by **UMR Racer** » Tue Feb 26, 2008 12:48 am

I am looking for a header for my 2001 GSR and I know that a one from 1999 will not work for my car because the O2 sensor is on the cat from 94-99 and on the header in 00-01. My question is if a header that fits a 97-01 USDM Type R will fit my car. I know the JDM ITR have 2.5 collector but i think that the USDM have the same size as the GSR. So I just want to know if the length is the same because the ITR headers all have the O2 hole on them. Also will a GS/LS header work if it has the hole for O2.

Thanks

Sean

andyjt · Post by **andyjt** » Tue Feb 26, 2008 1:00 am

UMR Racer;99604 wrote:I am looking for a header for my 2001 GSR and I know that a one from 1999 will not work for my car because the O2 sensor is on the cat from 94-99 and on the header in 00-01. My question is if a header that fits a 97-01 USDM Type R will fit my car. I know the JDM ITR have 2.5 collector but i think that the USDM have the same size as the GSR. So I just want to know if the length is the same because the ITR headers all have the O2 hole on them. Also will a GS/LS header work if it has the hole for O2.

Thanks

Sean

94-95 GSRs have the o2 in the exhaust manifold. The usdm itr header (2.25) will work for you. To clarify the question, what are you exactly asking? Use the converter that corresponds to the header that your using.

UMR Racer · Post by **UMR Racer** » Tue Feb 26, 2008 1:06 am

andyjt;99608 wrote:94-95 GSRs have the o2 in the exhaust manifold. The usdm itr header (2.25) will work for you. To clarify the question, what are you exactly asking? Use the converter that corresponds to the header that your using.

Im asking if I buy a after market header for a USDM ITR will it fit in my stock cat. From what I read on team integra all headers are interchangeable except for the 94-99 GSR because they have a diff size cat. I just want to make sure and the reason why I ask is because I am finding many more headers for ITR and GS/LS than my 2001 GSR. They all say 94-99 GSR.

http://www.team-integra.net/forum/displ ... mmon+Topic

andyjt · Post by **andyjt** » Tue Feb 26, 2008 1:11 am

UMR Racer;99610 wrote:Im asking if I buy a after market header for a USDM ITR will it fit in my stock cat. From what I read on team integra all headers are interchangeable except for the 94-99 GSR because they have a diff size cat. I just want to make sure and the reason why I ask is because I am finding many more headers for ITR and GS/LS than my 2001 GSR. They all say 94-99 GSR.

http://www.team-integra.net/forum/displ ... mmon+Topic

Okay gotcha.