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      09-26-2020, 11:30 AM   #14
CanAutM3
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Quote:
Originally Posted by Avaley View Post
Fair point.

There is an S58 dyno thread that got moved to the versus page.

Based on the preliminary dyno numbers, the S58 dyno numbers as a relative percentage from the factory are more underrated than the S55, and X3M have thus far shown a larger overhead for S58 tuning than one would expect.

Drivers of both S55 and S58 acknowledge an improvement in power and throttle response for the newer engine which should be no surprise.

The more important question the S58 make up for the 300lbs?
I am talking stock-for-stock, not aftermarket tuned. But yes, the S58 more than likely has tons of thermodynamic reserves. The initial factory tunes are probably quite conservative to allow room for the CS and CSL variants.
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