how to tune bmw e39 525?

i want to tune my bmw it has a 2.5 liter engine with 6 speed transmission i want t but a 540 engine or m5 engine on it do i have to change the transmission and i need website that help me in tuning it (turbocharger,supercharger,m5 exhaust )

One Response to “how to tune bmw e39 525?”

  1. Martin B on June 19th, 2010 6:53 pm

    Regarding and engine swap, unless you get a free M5 or 540i for parts, forget about it. Do-able? Sure (since they’re all E39′s)! Expensive and complicated? You bet (it’s not just the engine, but suspension, brakes, wheels, transmission and the rest of the drivetrain)!

    And, FWIW, since the E39 M5 is a V8, versus your inline 6, forget fitting that exhaust.

    At the end of the day your best bet it to sell the car, and buy the car your really want: A 540i or an M5.