This 2001 BMW M5 E39 Runs on a Twin-Turbo Toyota Supra Engine

If you've ever owned or been around BMWs and especially the M performance models, you should know that they're not the best cars for fiddling around with in your garage. But once you go down that tuning route, it's hard to go back, which is what happened to the owner of this 2002 BMW M5 E39 sedan, which in factory trim, gained its power from a naturally-aspirated 4.9-liter V8 twisting out 400PS (395hp).

Even though there was nothing wrong with the motor, owner Ed Mui wanted more at a lower cost, so he swapped the Bavarian V8 for a…twin-turbo unit from a Toyota Supra.

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