d-1sc408

iTrader: (-1)

i just bought the fast 90 intake and nw tb and the fast rails do you think this was a good up grade to my car and any pick up in HP

2002/Black/SS

iTrader: (3)

when u have forced induction the charged air tends to find its way to the pistons if u have the path ported or not, besides that i guess it should give u a small amount in my opinion but, then wouldnt just raising the boost a little do the same thing?
ported intake=more air / raising boost=more air.... see what i mean?
well also i would of personally went with a victor jr./gmpp carb style intake with a 90 degree elbow with a 90mm throttle body, but thats just my opinion, dont let me make u think u made a wrong choice, its just my personal opinion

EPP

iTrader: (22)

With a 408ci it is bound to help, especially if you are upgrading from the LS1 intake manifold. Some people are reporting boost leaking from the FAST intakes, I know of one place that I heard is refusing to use them anymore, as they have experienced too many problems with them. The Nick Williams throttle body is a nice one, they work very well. Bob

bmfcamaro

iTrader: (1)

maybe just try to seal it up with some silicone sealer or something to help out the normal seal of the manifold then bolt it together. thats what i would do. i could be wrong though.

TS6

iTrader: (41)

I wouldn't bother with the FAST 90 setup in a FI application. I'm about to make real close to 700 rwhp on 93 octane with a 408/D1SC combo and LS6 intake with a ported stock TB. For what it costs, the gains aren't worth it. Spend that $1000+ on a fuel system.

And I've also heard about the FAST 90 having problems with boost, from a reputable shop.