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acceleration hiccups
hey you guys so I have been having this problem for some time now but have been ignoring it
I got some other stuff fixed on the car now I want to get this taken car if
So on sport mode I notice that when I do a slightly hard acceleration or hard acceleration I get like misfires it hiccups like even a burble at mid Rpm even tho I'm pressing the gas pedal and some times a big cloud of black smoke
The car is stock only thing is muffler delete and bms intake
you think is a ignition problem
Maybe new coils packs
Sparks was replaced at 55k
Car has 68k now
or is it carbon build up
Maybe I need a walnut shell blasting or ?????
Anyone have any suggestions or opinions
By the way I do not get a check engine light or nothing
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bmw m2
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