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      03-07-2013, 02:01 AM   #9
mlai
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Drives: 650GC/E93M3/Lexus LS600HL
Join Date: Jun 2010
Location: Hong Kong

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Well.... First issue came up and I believe it is specific to my car configuration....

TMC tune is working well and got a boat load more power from my butt dyno. Yes, gains are not real until proven on dynos. But just so much fun driving the car now and I have other prove that there is a power gain (not so fun, though).

Problem is that with the power increase, when engine goes above 5K+ rpm, the rear-end gets really wobbly. I believe that the excess torque is too much for the IAS on my car to handle. I tested on the same stretch of the road, putting the pass-through plug on the cable and the car revs past 6K absolutely stable.

But with the tune at default position of 6, rear-end wobbles at 5k+rpm even on straight stretch....

So let me try detuning a bit and see......
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F06 650i Gran Coupe Ruby Black/Dakota Cinamon- 2012-10-12 Adaptive Drive/IAS/Surround View/Adaptive LED/Comfort Seats/BMW 356 Liquid Black/Michelin PSS 245/35R20-285/30R20
E93 M3 Cabriolet Satin Pearl White/CR - 2012/03/12 Bilstein PSS10/ Michelin PSS 245/35R19-265/35R19 Brembo GT
2011 F10 550i M Sport - Retired
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