Just dyno tested a 335i that recently had it's ECU updated by the dealership. Yes, the same infamous update that people have reported a power loss with. Any guess on how it did compared to the dyno results of my once stock car (with no ECU update). FWIW, my car put down 270-275whp and 280-285lbft of torque on the same very dyno.
Any guesses??
Shiv
www.vishnutuning.com