Originally Posted by Okiespaniels
Interesting...I'm not a fan of his 2nd gen stuff...halving throttle shafts may be ok for racing apps. Not for street use.
I'm pretty sure it'll sell.
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Apparently the issue for the 4th gen Fastman design is that the throttle body is bored the same diameter the entire way, leaving a gap around the butterfly at idle. This causes a CEL to pop up and I don't want that. Moe's has theirs designed so that it tapers down to stock diameter at the valve so there are no gaps. This uses the Bernoulli effect that made that tapered intake so popular (can't think of its name right now.)