Join Date: Nov 2013
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I got your PM Dantron, and here are my impressions.
Idle to 1500 rpm, it's a little louder than stock, with a deep tone and decent turbo whistle, but has no turbo "gasp" or "bark" anymore.
1500 rpm and up from partial to WOT, I actually think it is quieter than stock, which makes it really nice and quiet while towing.
I would definitely recommend the 51" donaldson to anyone with a deleted truck that doesn't want to have the annoying turbo sound and cab noise (drone)
I'll try to remember to get some pictures the next time I'm driving my truck. I welded mine, but you could clamp it if you wanted to.
2011 CCSB, 20x9 -12mm Badlands, H&S, S&B, Katzkin, DDM 5k, 1.5" leveling kit, 35" AT II's.