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  1. WK Grand Cherokee & XK Commander Forum
    Hi! I have a 2007 WK 3.7L 4x4 with 143k miles. At speeds of about 60 and up, there's a loud drone or howl which I'm convinced has gotten worse over the ~1,000 miles since I've owned the car. I've noticed that: -It only happens at 60mph+ AND when I'm pressing the gas-- it immediately goes away...
  2. Vendor Display
    From September 1 through October 31, 2015 get a $25 mail in rebate on select DynoMax mufflers, the Ultra Flo Welded and the drone-free VT muffler. Click the link below for all the info and check with your favorite retailer on purchasing some for your vehicle! http://www.dynomax.com/promotions/
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