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 HFS6 for 685. 9 RWHP