hey guys heres my problem. i have a 98 auto ls and everytime i put it in reverse i hear a rattling sound which sounds like its coming from the a or b pipe. it only happens when i put it in reverse. by the way i had an apexi rs catback for a 2dr extended to fit my 4dr. i checked all the bolts and they are all tight. does anyone know what the problem could be? maybe a bad cat or something? thanks

 

up

 

I have a 98 LS 2dr auto and having a a problem with my DC 4-2-1 header. Its causing my o2 sensor to hit and rub on the drive shaft. You might want to check that.

 

thanks man ill check it tomorrow