Originally Posted by wgknestrick
Please, Please Spoonagle
You need to put together a GT35R intake manifold comparison using the STI, Cosworth, LGT, 2.5i, TGV-less Spec C, and Magnus manifolds. You guys are the only ones capable of doing an unbiased and informative comparo. I suspect that there could be stock IM that are capable of gains that near the more $$ aftermarket options (LGT or 2.5i) for most HP levels below 550whp.
It'll pretty much be the thread that can answer many questions