Just out of curiousity why do so many think pressure is the answer? Also with the increase in pressure you are making it very hard on the injector pintals. How is the SL55 making over 650 horses with only using a factory pump with operating psi between 54-60 psi ??. I guess I just don't get the whole re-inventing the wheel stuff. There is a 15 minute solution to the fueling problem that leaves the car perfectly stock no cutting lines splicing wires....... is $335 just too much money to spend for the easy fix??? anyway enjoy your projects I'm done