Type: Posts; User: GA442
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I'm sure a custom tune like Black Bear Performance would be the best. I just installed a Diablosport predator that I purchased from www.diablosportpower.com for 264.95 with no sales tax and free UPS...
02-02-2011, 09:07 PM
My 2003 Silverado 4.8 just started making the exact same sound as your video. Did you ever find the cause? I also have a slight whistling noise under moderate acceleration. ...
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