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BMW 3-Series (E90 E92) Forum
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DRONE: Who's got it, who doesn't ?
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11-13-2007, 05:07 PM | #67 |
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^ The last I heard QTP still sucked, and their motors were still wearing out just as fast. I have heard good things from a few VW guys who use this though...
http://www.atpturbo.com/root/releases/release091004.htm Its a little different though in the fact that it operates kind of like a wastegate off of a vac source, and it opens any time you go WOT.
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11-13-2007, 05:26 PM | #68 | |
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11-13-2007, 05:51 PM | #69 |
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Np... I wonder if you were to unplug the vac source if the valve would stay open or closed? I would assume that it would stay closed since it operates like a wastegate, but i'm not positive. It would be a PITA to plug and unplug it, but if you only wanted it for track days or every once and a while then it wouldn't be too bad.
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11-13-2007, 10:46 PM | #70 | |
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11-14-2007, 01:04 PM | #71 | |
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11-24-2007, 03:34 PM | #73 |
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I just put on my CP-E exhaust and I was really surprised that for as aggressive sounding as it is, the drone is very minimal. I know that everyone has a different tolerance for drone and it depends on how you drive, but to my ears there really isn't intrusive sounding at all when cruising at 65-70mph.
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05-22-2012, 07:19 AM | #74 |
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have the magnaflow touring for the 335i with AR downpipes (+oem 2nd cats) there is drone 1500-2000 rpm AT.
think will remove the secondary cats and replace with magnaflow 11379 |
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05-22-2012, 09:07 AM | #75 |
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Has anyone actually dynoed a 335is before & after to see if the aftermarket exhausts do anything but make a power sound?
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