I have a m30 b35 swapped into my e28 and recently installed the 179 ecu miller maf/chip. Idles fine at 750rpm. Took it out for a drive, once i got to a stop it idled at 1100 rpm. Parked it and still at 1100rpm, turn it off for about 4 mins, turned it back on and idled normal at 750rpm. Can it possibly be a bad chip they sent me or still adjusting? Took out the throttle body to make sure i had the right clearance. Checked all vacuum lines, everything turned out fine. Did all the troubleshooting on miller perforances website everything checked out fine.
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Mine has done the same thing ever since I installed it. Considering I only put 2-3K miles a year on my car it never bothered me that much.
I've heard adjusting the TPS can help. I'm not 110% on the proper procedure, but I know the b35 TPS has an audible 'click' when the throttle opens. IIRC, the 'click' on the TPS should activate just as the throttle plate starts to open.
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