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06-05-2019, 07:44 PM | #1 |
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PLEASE HELP! Car is not idling properly after MHD install.
Hello,
I have a 2009 bmw 135i Trying to install mhd and my car isnt dealing with it correctly. First install stage 1, no options on. Car started and idled fine. Then i added burble option, started car and it idle stuttered very hard. Removed burble, continued. Went to stock mhd options on, continued. Flashed to oem, still stuttering idle. Is there any way to fix this with the app? I need the car running tomorrow. |
06-06-2019, 12:11 PM | #4 |
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06-06-2019, 03:00 PM | #5 |
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definitely take the car for a ride if you flashed back to stage 0
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2011 Space Grey 135i DCT:
Pure Stage 2, Fuel-it Stage 2 LPFP, ST XTA Coilovers, Berk Street Axle Back, MHD Stage 2+, VRSF Catless DP, VRSF 5" FMIC, VRSF LCP, BMS UCP, M3 FSB, e92 M3 Drivers Seat. |
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06-08-2019, 07:11 AM | #6 |
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I had a similar problem. Everything was fine with stage 1 until I added burble option. My "rough idle" was two cylinders misfiring. I replaced all the plugs and coils. Everything is fine again but I'm staying away from the burble option.
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06-08-2019, 11:51 AM | #7 |
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Your car already runs, you can drive it like that safely if you have no cat.
You were probably on original coilpacks and they fail. Odd that it happens on your flash. Replace em and you can also do the plugs for good measure. |
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