Quote Originally Posted by Sport1.3
3" piping Does not always benefit a F/I motor. backpressure has nothing to do with it
qft

the eaton m62 is really only effective up to the 2.5 inch exhaust.
the harrop tvs, twincharge, and the hahn turbo swap will warrant the 3"

Quote Originally Posted by stillaneon
May not benefit it. but a 14 hp loss?




If thats true, Im sorry. I know you drive a cobalt, you need all the hp you can get
a simple turbo swap makes over 300 hp, and the harrop TVS makes 350 hp which is max for the stock internals. Im not that bent on being the "Fastest" /w my DD. just quick.