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Old 03-12-2007, 08:37 PM
wizegi///m3 wizegi///m3 is offline
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Join Date: Oct 2007
Location: Boston, MA
Posts: 9
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Richard I too will be running a RRFPR with my M3 and now this has raised a question.

In a previous thread I asked if you had a nozzle to use with my setup, that can be answered there, but I am thinking the following:

6 x 70cc's in a rail powered by your HFS-5 system, this will be done per throttle body.

My RRFPR will be set to 43psi down low and pushing upwards of 70psi at the top. Now my understanding is that my fuel injector duty cycle will not change as i will be using the pressure to add more fuel.

Since I am running a supercharger and not a turbo should I use the MAP pressure switch as opposed to the Fuel injector switch?

If I run MAP, is there a way to vary the flow? So at say 5psi of boost I am only using 60psi line pressure and then at 12+ i goto 125psi line pressure?

I hope this is the correct thread to pose such questions. It seemed fitting.
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