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i never really studied on n/a tuning, but do the regular intake, exhaust system.
like, i guess runner exhaust manifolds, well um, spread intake design(i mean like a evenly distributed air in the intake manifold), port & polish(though it's known that this wears out, i think, someone clear this up for me). the valve springs is another thing, the more it's able to hold out against valve float the higher you can rev(usually n/a's are high revving engines, i think) better head design(probably costly), better cam design(usually high lift ,higher duration, but as this will cause idle trouble if too serious). remember on the exhaust system, try to make the pulses help each other out(you know match their um exhaust timing...something like that), and no sudden bends straight through design is best.
the compression part is already there though, if i remember right it's in the 10:1 ratio 10.5:1?
well it's a good factor. custom is way to go, and well, where you get the parts i don't know.
but don't take what i say serious as i have never done anything.
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JEV
Last edited by JEV; 02-25-2009 at 12:34 PM.
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