03/04/2026
Since I had the opportunity to live with this car for over a week now, before the F600 swap takes place, could not ignore the knowledge put in to this platform over the past two years. We decided to start from scratch and tailor a tune package for these JCW ALL4 and GP3 B48E engines, and more more so for E40. Strong platform, with very respectable potential behind it. This car did 295whp and 340ftlbs wheel on stock tune with local 93 Pump. We tailored a stg1/2 Tune on 93 Octane, got it to 330whp and 375wtq, and then we did a e40 mix, and tailored the tune, easy 350whp and 370ftlbs tq. No hardware modification required, just tune and fuel. On FWD car, can easily expect another 10whp. Amazing platform, we kept the torque in to the conservatieve zone, to keep motor happy. Stock GP3 Turbo, spools too aggressive for my liking, 375ftlbs tq by 2800rpm… on to the F600 next, lets get this ALL4 Hauling some smiles per gallon. Enjoy this development, GP3 Owners, stock car with E40 and you have a machine out of the box :).