I just bought an aftermarket Remus exhaust for my Del Sol, it has a hi-flow cat, but no place for my secondary o2 sensor! Do I just leave it disconnected?? Is this going to affect my performance with the ecu limiting something? Any splicing tricks like the CYP sensor?

 

you will get a CEL but it shouldnt effect performance. the secondary o2 is purely for emissions reasons. the primary gives feddback the the ecu for perfomance. regardless i think you should get the correct cat or a bung welded to the exhaust so you can hook-up the o2 correctly.

 

Just take it to any decent exhaust shop. They should be able to weld an bung on for u and screw in the o2 sensor in no time. Shouldn't cost much either and that way u wont throw any codes and will pass emissions.