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      09-18-2018, 08:50 PM   #20
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
Quote:
Originally Posted by m3jala View Post
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.
Issue I have is that it is really quite bad at low RPM and I am getting some pre-det at 5K+ too (not much but a little) when running a tune. When running factory, it is all normal.

Just wondering if there is something that may lead to pre-det - fuel filter? Coil packs? I am not throwing any codes...

Good times...
I know you said spark plugs look good but when were they changed?

Is the air filter clean and no blockage?
Appreciate 0