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Originally Posted by m5james
S63 vs S63TU. I'd rather spend 1/4 the money modding my current X5M vs paying for a newer one...but I might be eating those words one day once we find the limits of the S63. Per talking with Precision Tuning in New York pushed one to 630, the car owner wanted more and Kevin said that's all it had, the owner took it to another shop who pushed it more and it died on the track...abridged version of that story. It could have been a tune issue, it could have been a fueling issue, nevertheless the owner isn't on these boards as far as I know and I haven't read of anyone blowing an S63 from too much boost, so the jury is still out.
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To be fair these are 6,000lbs daily grocery getter bricks. They're not high performance vehicles. 0-60 times of sub 3.7 are unreal for what these cars are as is. If you want a race car there are oh so many better choices out there for you
I love mine!