factory exhaust hdr./y-pipe questions
 

I was observing at this years car show that the late TPI cars had upturned factory exhaust manifolds.

WHat year did this start?

I currently have an all stock TBI 88 SC Camaro. I want to look stock but swing a big stick.

Am I correct in understanding that the TPI cars got a larger EXH manifold, and that the best TPI EXH manifold is the upturned one, and that the Y pipe will be 3".

Don't worry about back pressure ... my 2.5"in/out muffler will give me plenty of back pressure.

I know it is a lot of work for minimal gains, but i want to look stock.

Mike

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1988 Camaro Sport Coupe305TBI-4spdAOD-2.73open in "bought stock" condition. That'll change if it stays around here much longer

ANYone???

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1988 Camaro Sport Coupe305TBI-4spdAOD-2.73open in "bought stock" condition. That'll change if it stays around here much longer