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Project: 2003 BMW M3
No, they idle really roughly with cold start mode on and if you have aftermarket exhaust, it's way louder. Mine would run so poorly with that on that it would stall at the first stop sign I came to when I put the clutch in if it was really cold out. Once it warmed up it stopped. Now it doesn't do that, it idles perfectly smooth when it's cold.

I was thinking that was related to the ICV needing to be cleaned, but it seems to have gone away completely with the tune.
2015 VW GTI  |  2007 4Runner Sport

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2010 Nissan 370z  |  2003 BMW M3
2005 Subaru WRX | 2010 BMW 135i | 1999 BMW M3
2002 Pontiac Trans Am WS6 | 2006 Mitsubishi Evolution IX SE
1995 Pontiac Firebird Formula | 1998 Mitsubishi Eclipse GSX | 1996 Pontiac Firebird
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