Quote:
Originally Posted by Rotzy
A flash tune (like BM3 and others) is going to be faster, more powerful and safer than any piggyback (like RaceChip, Dinan, etc.). As onfireX5 said, working with a tuner to "dial in" the tune to your vehicle is best. This can be done through BM3, but some custom tuning shops also have their own tuning methods outside of BM3.
In addition, a flash tune is not nearly as visible to the dealership when taking the vehicle in for service. However, if something major (engine, transmission, differential, etc.) does break, they very likely will find out and quite possibly will not cover it under warranty.
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Rotzy is right and those engines aren’t cheap as we all know.
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2022 x5 m50i - Dravit grey
2005 evo 8 (current) built 2.3 488/409 mustang dyno
Old stable mates - 87 325i, 88 m3, 90 m3, 97 m3 4dr,
04 325xi, 91 gmc Syclone, 08 335xi, and 13 x3 35i msp
2014 x5 50i msport