D900-40M Performance Engine Software
Dinan E9x M3 Engine Software raises the factory rev-limit from 8400 to 8600 RPM*, endowing the V8 with a broader power band and greater road speed potential in each gear. The software also removes the top speed governor, enabling the cars to attain their ”natural” top speed; and the V8 will pull right to red-line in top gear! Changes to the throttle mapping help soften throttle tip-in for a sportier feel and improved modulation capabilities. The combination of Dinan’s re-calibration of ignition timing, fuel delivery, and cam timing produce a maximum gain of 9 hp @ 6000 rpm and 8 lb-ft @ 6000 RPM. Peak horsepower is increased from 414 to 421 at 7900 RPM.
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