drive with stock tune until you'll find issue
Quote:
Originally Posted by Reu
I tried ACN tunes and also 91oct tunes and i still was getting knocks. I only am on stage 1 but the most consistent tune that the car performed amazingly was in Stage 2 93oct and i rarely rarely got knocks and ignition timing was always on point. I confirmed that the 93oct from Enemed(the only reputable fuel that we have in my country) is good quality. I have many runs where timing is bang on perfect throughout the whole rev range and BM3 confirmed that the car is performing great. The strange thing is that then lets say the next day the car starts knocking or cutting ignition. I reflash a tune, all is good after 8 runs but then the car starts knocking again.
Could this be ECU related ? i had a 20i before but when i bought the new engine i got the 28i version directly from BMW. Of course the the ECU was reprogrammed to a 28i since they are the same.
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