Def for real...Im catless, and have the BMS Can Flap Module...I did it accidentally and it was outragrously loud....Then when I accidently turned it off I was confused and upset...playing with settings and using the bms mod, my inly conclusion is def an open valve along with maybe a more conservtve ignition timing setting or something, i dont have any idea but def more unburnt fuel exploding in that pipe...
I let off next to ppls windows, and I could imagine it would be startling...LOL im a dick
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2020 BSM X4///M-2016 BSM ///M2- 2011 668 ///M3
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