Stillen header issue finally fixed

Denny McLain

Sometimes true gains do not show up on the dyno and again, your right on. Just ran through my spreadsheet increasing the rev limit to 8000 rpm from 7500 rpm. The net effect is a 5 hp average gain in each of the first three gears. What does that mean? Dunno.......waiting for final tuning and some track time, but would guess a half to over a full car length.

How about air intake temps while you're moving? Did a lot of research logging actual intake temps ending up fabricating a ram air type intake to direct air directly into the Gen 3 filters. Also put a lot of heat barrier on the Gen 3 intake tubes and in particular the MAF's.

On a cool motor my actual intake temps are a low as 3 degrees over ambient and in everyday driving 8 degrees over ambient. So what does this mean? In every day driving was able to lower the temps by 10 degrees vs stock Gen 3. If you go by the 1% increase in power rule by lowering intake temps 10 degrees.......2-3 hp throughout the entire rpm range.

Lowering your water temps from 200 degrees to 160 degrees is worth another2-3 hp almost throughout the entire range.

Just doing those things will give you a 1-3 car length advantage in the quarter mile. About getting more 02 into an engine.