08-28-2019, 04:30 AM | #1 |
Enlisted Member
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Rep 39
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Rough idle during slight pedal press
I have a rough idling at cold start. After a minute is fixes itself however if I slightly feather the gas pedal between roughly 850 -1000 I see my rpm go up a little bit to 1000 then drop down to about 550rpm and the engine starts shaking/idling really rough until I depress the pedal. I initially thought it was the plugs so I changed them to the 97506 .22 gap however its still happening. My next idea is to enable the cold start back to stock setting on the bm3 tune.
I'm n55 ewg w/ do, cp, injen intake, stg1 bm3. Any ideas on why it might do that? I don't have codes either |
08-28-2019, 07:48 AM | #4 | |
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I had a similar issue a while back. I turned cold start back on and changed the cold start RPM to 850, I believe OEM setting is around 1150, to reduce the loud exhaust note upon cold start. This fixed my issue.
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2014 F30 335i, M-Sport, 6MT, V804s, custom exhaust, CTS Turbo Intake & IC, FTP CP, VRSF DP, TMS Strut Brace, BM3 Stg 2, AEM WMI, H&R Sport Springs (381 whp, 429 wtq on Cali 91oct before WMI). SPI Films Blog/DIY Vids |
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08-31-2019, 03:45 AM | #5 | |
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UPDATE I changed the cold start to OEM, and it fixed it! like you said Jared, it is loud at 1150ish. I might have to play around with the rpm setting and see if it stays quiet and fixes the idle all together. Thanks everyone. Btw I'm at 46xxx miles guys. |
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