Quote:
Originally Posted by JL8Jeff
I wonder if he's running overly rich and opening the cutout helps balance it out. I would still be really suspect of that muffler though. 12 rwhp is a big number.
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It is, and I don't think his cam is all that big. I'm pretty sure the people who installed it are the ones who dynoed. It was on a mustang dyno I believe so it's more like 15-17hp on a regular dynojet. I'm sure Doug will chime in.