Konablue10Gt
forum member
who did the porting? because from what i read on the N/A crew thread porting doesnt adversely affect torque if done correctly.
My local machine shop AHM performance did them. It was a quick weekend job since time was an issue. They have decades of experience and I completely trust their work.
I believe it was just a mismatch having ported heads with everything else stock down to the cats and paper air filter.
I have the flow numbers if you are interested.
Thanks