BMW E34 525i 2.8L 685 RWHP
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This car is a '92 525i with an M50 motor with 0.020" Wiseco Pistons, 8.5:1 compression, eagle rods, and an M52 crankshaft. It is running a T4 PT76GTS turbo @ 28 - 29 psi in this video and 93 octane lukoil(!!!) pump fuel with 50:50 water/methanol from an Aquamist HFS-6 for 685.9 RWHP