Originally posted by e30dood
Oh I think Alvin meant why would a simple chip would do anything for any stock na engine that was engineered from Bmw. He thought Bmw would've tuned their engines and software to perfection or to their full potential directly from the factory.
right but there is a big difference between full fuel efficient potential and full performance potential
there are other factors like cost when mfg tunes the cars but the main reason was for economy