Quote:
Originally Posted by delviacv2
Thank you opasha, I have noticed that after 3500rpm there is no much power, my 2011 x5 35d on the other hand (is tuned by rochetchip no tuning box) pulls hard all the way to redline
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Yes, I think that's why
42pilot recommended changing the S2 for better balance. Diesels can change both S1 and S2, while petrol can only change S2. S1 deals mainly with torque while S2 deals with power.