I want to get mac headers and am wondering if i can get the off road y pipe without the cats. Will this mess up anything on my car. I would imagine it will be fine as long as i keep the o2 sensors. I want to just run a straight pipe out the back. Loud and free flowing. Thanks for your help. Mario

 

They come either with an offroad y-pipe or one with cats..

youl need 02 sims is all..

also please go here http://web.camaross.com/forums/showt...threadid=66840

 

While we're on the subject of cat. converters, do the factory ones flow well enough that there's no huge advantage to changing to "hi-flow" cats if I were to upgrade my exhaust system?? When I had my '81 Z, I put a set of cats on (for legality and emissions test sake ) which were supposed to be "hi-flowing", but I noticed a big loss in power..........especially the 1st time I took the car on the street and laced it....................I felt like I was towing a freight train!!! Anyway, is the difference between a hi-flow and a factory cat big enough to justify getting new cats??

All opinions appreciated.

And DreamCar@20, I agree..........you'll probably need O2 "sims".

BTW: Dave, I just spent a few minutes and fixed up my sig. It used to be 8 lines --- now I'm on 5 exactly. (I'm so proud of myself!).