Dom guerrero
Junior Member
would I get you're same results in installing this drop in pump that I have ? DW400 btwCopy of the fuel pump wiring upgrade install instructions here:
https://www.departmentofboost.com//...p_Wiring_Upgrade_Instalation_Instructions.pdf
These are instructions for the kit that had been available from S&H Performance. JeremyH here on the board was the contact for it.
I'm running the "VMP 500" kit on my 2010 Roush 427R with the little M90. This is the smallest pulley you can put on an M90 and it won't push more than 500 fwhp worth of air (under ideal, not heat soaked, hero run conditions) as noted above. I'm betting you have that same pulley. I am still running the original injectors as part of the Roush M90 package, no upgrade needed. I have both VMP and JDM tunes for this combo and neither have fuel system duty cycle issues on the stock GT fuel pump with the wiring upgrade.
no I haven't ever messed w the fuel filter in the year that I've had the car, is that something to that would cause ,my duty cycle to be so high ?Same here. Stock fuel system with m90 and small pulley. No issues. 8psi at sea-level density altitude. Have you replaced your fuel filter?
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