The E39 M5 here belongs to BimmerBoost member 930chas. The 2JZ-GTE supra motor was rebuilt by E-Shift Performance and has been set up for 93 octane as well as E85. The motor was recently tuned by Justin Nenni of Tuning Concepts and has put down some very impressive numbers. On 93 octane the car dyno’d 613 wheel horsepower and on E85 it put down an eye opening 848 wheel horsepower. Impressive? Yes indeed. Check out the videos and pictures below.