just got a dc 4-1 for my gsr, i noticed one thing..there is no hole for the o2 sensor like on the header



that header is for a ls, does it go somewhere else for a gsr?

here is mine


also am i going to need a new gasket when putting the new header on?


thx

 

What year GSR do you have? My '95 has the O2 in the cat.

 

95..i havent been under my car yet to see where the o2 sensor is..thats why i was wondering

 

For the GSR:
94-95 has 1 o2 on the cat, 96-99 has 2 o2s on the cat, and 00-01 has 1 o2 on the header and 1 o2 on the cat.

For the LS:
94-95 has 1 o2 on the header, 96-01 has 1 o2 on the cat and 1 o2 on the header.

That's probably why you are a little confused, because they kept changing depending on year and OBD version.

As for the gasket, you might want to get a new one at the dealer ($10 or so) since your original gasket is 10 years old now. But you can get away without a new one, I would clean it off though if you reuse the old one.

 

i reused my gasket, because it was still in good condition, i shoulda new gasket anyway