Stage 4

Stage 4 tune is the same as stage 3 but with addition of flex fuel tuning.

We do this by adding a flex fuel sensor kit, Dorch Engineering upgraded high pressure fuel pump and BMW S58 injectors. With these mods we can then add E85 fuel to the pump fuel in the fuel tank to gain a huge amount of power. This normally takes power to about about 620whp & 603 lb/ft torque which is an estimated 733bhp approx.

Also we can add water/meth injection map or flex fuel ethanol tune to any of the stages of tune with some nice gains in power of just pump fuel.