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**moebius** · 5-20-08, 8:48

Excellent idea, you'll have to be careful, a potential problem with a variable position servo is speed..

How fast can engine rpms change, and how fast can the ITB be adjusted?

Most of the variable intakes from manufacturers (thinks like VICS/VRIS from mazda) are valve based... one or more sets of runners..

They do that for reliability, cost, and simplicity.

Your idea with the variable length runners will definitely work. You'll probably need more than 5-10 points in the end, but it sounds like a great start.

5-20-08, 8:48	#15 (permalink)
moebius Join Date: Apr 2002 Location: Vancouver, WA, USA Age: 30 iTrader: (2)	Excellent idea, you'll have to be careful, a potential problem with a variable position servo is speed.. How fast can engine rpms change, and how fast can the ITB be adjusted? Most of the variable intakes from manufacturers (thinks like VICS/VRIS from mazda) are valve based... one or more sets of runners.. They do that for reliability, cost, and simplicity. Your idea with the variable length runners will definitely work. You'll probably need more than 5-10 points in the end, but it sounds like a great start.
	1990 626 GT 5 Door-- which "goes like a scalded weasel" says my father-in-law... on 1/2 throttle... Zoom Zoom...