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Downshift but no power?


CrackedDSM

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Sorry for the terrible thread title but it’s pretty fitting. 

 

2015 sport, LMS E30 tune, k&n drop in filter. 

 

 

When it’s cool outside, I’ll drop it into sport, floor it, it’ll downshift but then it feels like it’s pulling timing, boost, or both. You can feel it not accelerating like it should. It seems to be a recent development. During the day when it’s warm, no issues. Car pulls like a freight train. Weirdly enough it doesn’t do this in drive(drive mode usually isn’t as fast as sport). 

 

Does this happen to anyone else?  Is it tune related? Or is it something more sinister like hard line parts. 

 

For the record, I just changed the oil and PTU fluid. It took like 22oz to get it to weep out of the fill hole. 

 

Any thoughts/ideas/first hand experiences? 

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Never mind. I just did a log and a 1/4mi run on my dragy and it’s still quick, plus there was no knock or pulled timing. I guess I’m just getting used to the power, or it’s being soft because I drive like a granny most of the time. 

 

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feel free to post your ideas anyway though! Lol 

Edited by CrackedDSM
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