Ok...every1 talks abt how the 5s intake manifold and head do not flow very well...wat exactly causes the manifold not to flow well...the reason i am asking is b/c i was thinking abt. a custom manifold MAYBE...lol...and i was wondering if ne1 had ne ideas on wat would b the best setup?

The 5SFE was designed to flow most efficiently at lower RPMs.

I don't know as far as the manifold goes, but the valves in the head are angled so the air rushing into the cylinder mixes well at lower RPMs, but as a result of this they don't flow as well at higher RPMs.

and that's why a 3sgte head works wonders

>
obstructions.

My manifold flows rather well. Besides, you dont want to roll at high RPMs all the time, that's just wasting gas. it's just the way that our power curves. Us A/T guys have it way worse anyway. We've only got 4 gears... 3 gears if were not driving in over-drive mode.

And my celi still has no problem getting up and going somewhere

This post has been edited by D-Man: May 12, 2008 - 2:59 PM