Hi,
My heads and intake are stock, out of the box, no porting done. I think I just hit on a good combo that works well together, and that I managed to get a tune on.
Bling, actually, I think those numbers are pretty good for only 18 degrees of timing. Bump it up to like 26 ish and I'll bet you see over 500 RWHP (use good gas tho when you do it).
Later,
Jim
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