Quote:
Originally Posted by Oski666
This is likely unachiaveable, at least for a stock Engine on a reliability and longevity perspective...You would need AT LEAST aftermarket intake, forged pistons and intercooler aswell as complete exhaust system, and shifter dedicated map to reach 340 effective...Stage 1 is actually around 300 HP..going further, would mean reaching a B58 power with better torque and Whp basically, which wouldn't justify M340i model...and it's unlikely what BMW would need....
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tuning boxes ( at keast the one below ) claim 50-60 bhp boosts. this one claims 312 bhp.
https://tdi-tuning.com/car/bmw/3-ser...uning-box-chip