Quote:
Originally Posted by randy500
I think it’s pretty quiet at cruise too, and it’s boosting about the same as yours, slight turbo whine. I think it’s 4” pipe from turbo flange back. I don’t really get exhaust noise, just engine.
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Have you played with your timing, perhaps in their head they are hearing the rattle? Just thinking out loud because mine with the windows up with stock insulation you’d have no idea it has a Cummins under it. Idles smooth with a slight rattle, add fuel/boost she purrs, add more and it has everyone going wtf is that, lol