Thread: Adding Performance Shift to 03 GTP

Originally Posted by mattftmfw

i have some PEMS i did myself if you're interested.

now don't get me wrong. its not gonna compare to headers, if you can get away with headers and a catalytic converter do it!

Maybe for the rear, but from everything I've read on PEM's is there really isnt much room to port on the front manifold. Also, its an even debate about the PLOGs "are great" to them cracking within a few months