Addendum ;
My engine is mostly stock. I can't/won't change my exhaust for the test. At most because I'm running open exhaust after the cats, I might leave them on for the dyno bit to save time and money, I might just delete the cats upon install since they're coded out anyway.
I will provide you with with the best answers to the 4.4-4.6 questions. Every car will be different for sure but I get the sense that you're pretty skeptical.
I'll enjoy getting your reaction BC.
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'03 4.6is (the wife' s ride)
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