civicgsr96

need advice: what are the modifications i have to do to make a jdm itr 4-1 header fit into a gsr engine swap. i am running with a stock gsr cat.
is the jdm header longer or shorter than the stock gsr header down at the down pipe before the cat.
Thx.

hybridreams

https://honda-tech.com/zerothread?id=156906

civicgsr96

i have read that earlier but is the jdm header longer at the end than a gsr header?
i think it is.
There is another thing, i think the O2 sensor on the gsr is in the cat but the O2 sensor inlet is in the jdm header itself. i am not 100% about this but i am pretty sure that is right.
i guess if the jdm header is longer, i will have to modify my exhaust piping along with the 2.5 inch collector on my cat. Are these are true? Thx

owen_the_soyboy

i have read that earlier but is the jdm header longer at the end than a gsr header?
i think it is.
~YES it is.

There is another thing, i think the O2 sensor on the gsr is in the cat but the O2 sensor inlet is in the jdm header itself. i am not 100% about this but i am pretty sure that is right.
~YES thats right, you put your O2 sensor in the JDM header actually.

i guess if the jdm header is longer, i will have to modify my exhaust
piping along with the 2.5 inch collector on my cat.
~YES thats the truth, muffler shop should be able to hack it for ya.