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[Ghowie]

Quote: Originally Posted by gvilleSRT

If I'm wrong, someone with HANDS ON experience jump in here... I'm only an engineer (3 more classes). You DON'T NEED a fuel return kit. The last injector getting "starved" is a result of insufficient fuel pressure and/or fuel rail volume. The reason newer cars have this system is to meet Federal requirements for evaporative emissions. A returnless system will work fine with high horsepower (hence, stg. 3); IF someone can TUNE it and properly match the components (AND avoid unwanted pressure differentials w/i the rail). Many tuners just swap back to the old return system because its easier to set a static fuel pressure with injector PWM (Pulse Width Modulation, to control flow) than to set up a seperate fuel pressure table (pump voltage) for all possibilities of throttle angle, mani. pressure, injector duty cycle, etc. A pro, with the right background, resources and TIME could make a returnless system work with a really high hp car. Of course, at the moment, that would entail ripping out the factory ecu and wiring and swapping in a MoTec or other high end programmable system with lots of functions. Put that in your pipe and smoke it.

but with the time and $$ to tune without is far more than just using a return