Quote:
Originally Posted by falconxx12
I did know this car could do under 4 seconds 0-60? What is "bootmod3 s55 stage 1?" Is it a software change? Does it increase HP? Does it void warranty?
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It's a software tune with ~485 hp/500 ft-lb peak output:
https://www.protuningfreaks.com/coll...-bmw-f8x-m3-m4