[darkpuppet]

S2,Sep 29 2006, 03:56 PM Wrote:Ahhhhh if you got it try it, why not.........

but a DIY stock TB won't ever be like an aftermarket TB with performance, etc and overall 'gains' in general.
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Aftermarket throttle bodies don't really give you that much more performance. There are so many other restrictions on the TB, that having the extra 3 mm opening won't compensate for the 10mm shortfall in the MAF.

The better flow offered by aftermarket TBs is primarily good for throttle response, which you can get if you just port out the stock TB..

If you go agressive with an NA setup, a larger throttle body down the road may be beneficial as you try to free up the car's breathing.

However, if you do FI, once again, the aftermarket units don't make much of a difference over a ported stock besides how they skew the tune (which can actually lead to issues if you don't correct for earlier WOT characteristics).