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Does it only happen if you reverse during cold start, or still shortly after? The only time I had it go wacky was when I tried to reverse early on in the cold start, when idle revs were sitting in the 1100-1200 range. Although I think I also had to tab the gas to cause it.
And a completely non-rhetorical question: why would a dirty or malfunctioning MAF sensor cause severely unstable idle when starting up cold, but magically cause no problems a few minutes later or any point thereafter?
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Sakhir Orange F10 M5 | BPM Sport "track tune" | CSF Charge Coolers | KW V3s | Dinan Swaybars | Turner Monoballs | Soul Exhaust | Mishimoto Oil Cooler
Last edited by vafan13; 12-02-2020 at 02:09 PM..
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