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      09-18-2018, 04:39 PM   #18
m3jala
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Drives: Jet Black 2013 BMW M3
Join Date: Jan 2018
Location: Tysons Corner, VA

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Quote:
Originally Posted by Scharbag View Post
I updated the original post. Issue is pre-det under heavy acceleration at lower RPMs. Was wondering if there are any things to check if pre-det is a problem. Plugs look good. I run Shell 91. Bearings are BE and car has ~44,000KM on the clock.

Any help would be greatly appreciated.

Cheers,
My car does predet at times at around 2k. I bought the car at 17k and it sits at 27k now. Right now about time to change the spark plugs so that might contribute. My view is that these engines simply are tuned for high rev. Try driving in traffic between 2.5 and 3.5-4 rather than 2 and 3 for example like in the usual 5.5k max rpm toaster oven utility car.
Appreciate 0