I recently got a 2 piece 4-2-1 header off a 1989 CRX dx, and I own a civic (96), any chance that thing will fit my car? Thanks for the input..

-J

 

all d series headers will technically bolt up to the engine & exhaust. the differences lie in the mounting bracket that braces the header under the engine and the location/number of o2 sensor bungs

 

Highly doubt it...

 

in other words, yes it will work, but if your engine has 2 O2 sensors, you'll have to chip the ECU to bypass them, have another o2 sensor bung welded into the header, or rig up/buy an o2 sensor simulator circuit to fool the ECU.

Also, im not 100% positive on this, but I know on the 88-91 civics/crx, the o2 sensor is located very close to the ports, and on later engines, im not sure where they/it is/are. Im thinking they are both down by the cat?

 

If I'm not mistaken, there was 2 02 sensors. one by the coupling (4-2) and one down by the collector (Yet to remove the header).. Thanks for the Input you folks rock!

-J