Quote:
Originally posted by JBeryleC
Ok, so is the MAC H-pipe (smog legal) worth the money to replace the stock H?
Or should I just keep the stock piping and just weld in some MAC mufflers?
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no cat is legal to be removed if the car has under 50k and or the cat is working
even the high flow catted mid pipes are not legal in cali due to the fact they only have 2 cats not 4 what most people do is buy a mid pipe that they like and when it comes time for the smog test they just swap them back to stock
and yes it will free up some power replacing the mid pipe but that cat back is done just for sound the most a bolt on 99+ Gt will pick up is maybe 2-5 if your lucky