The Drive Network is at it again, and this time, they’re tackling an incredibly misunderstood topic – ECU tuning.

For years people have bought Ebay chips in hopes of making horsepower gains; the first few Fast and Furious films made electronic engine tuning seem like a breeze. However, the truth is that with today’s modern engines and their variable valve lift, drive by wire, variable cam timing and of course turbochargers, ECU tuning is an extremely finite and delicate task. I’ll BMW running legend Steve Dinan take it from here.