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Discussion Starter #1
Since the MULTI ECU update, my car will at times (before engine warm up, under heavy load, or ascending a hill) will have a vibration and loud exhaust sound. It stops when I back of the slow down, but will come right back once get back on the gas. I had it in for a check, but could not replicate the situation. I have tried to record it with my phone, but it does not come out clear enough. Passengers in my care comment about the sound. Anyone else have this issue?
 
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Sounds ike the vehicle may be hanging up in a higher gear and not downshifting, mine has done this occasionally, its a fuel saving strategy. Next time it happens try accelerating and realeasing foot from gas pedal and if trans downshifts and noise is gone then there you go. Some road conditions may make it more apparent ie; your daily route.
 
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