Originally Posted by bnuk
ok, just finsished calling car-sound. Apparantly the CA-spec integras have one O2 sensor on the header and one on the converter, this means that the CA-spec headers are longer. Non-CA integras have both sensors on the converter and have the shorter header. Odd thing is nobody sells "CA-spec" exhasuts components. You would think if they were different, parts would be specified as such.
But....my CARB-legal DC Sports Header has an O2 sensor bung on the header - about 2" away from the bottom flange. I'll swear to it on a stack. Oh, wait a minute..:doh::reechy:
:loco: Let me step back a second...and look at the whole picture.
h:
• Your GSR is from 1998, and thus it's OBD-II.
• Since it's OBD-II, it would need 2 o2 sensors, one before and one after the catalytic converter.
• So a 1998 GSR Header (stock or aftermarket) ought to solve the flange angle problem.
• Since an upstream o2 sensor bung is missing from the Carsound cat you have now, exchange it for one that has a bung at either end.