Who else has tried these? The one Ive got from PHP is duramax quiet (its kinda cool), but its served up with a healthy dose of unburnt fuel as well. I think the attendant would rather have the noise than the fuel smoke.
I havent tried the tune in park or neutral, but with a converter idle load on it, no bueno.
I havent tried the tune in park or neutral, but with a converter idle load on it, no bueno.