This video showcases the return of a BMW E90 M3 after an extensive rebuild, featuring major upgrades that enhance power, ...

The AI tune raised boost to 19.3 psi, dropped 0 to 60 time by a second, and it sounds mental.

The thing about the tuning scene is that you don't need a long list of mods to make a noticeable difference. YouTuber Smpl Builds proved this point with a five-day build on an E90 generation BMW M3.

It's a BMW on BMW showdown but just any kind, these cars are basically the same, excepting the body style. Both of them are M3s, both are fitted with ESS's VT-625 and DKG transmissions. The only ...