Grimreaper
Well-Known Member
are you going to run larger wire for the dual pumps on those holleys? likely will drop 2-3volts from the fuse box to the pumps on stock wiring.
if using a voltage booster or brushless controller it would be better to trigger from the stock signal for the lo to hi so you can adjust the pressures accurately. roush does this on the gen2 setups on the phase 2. uses the jms fuelmax ez voltage booster. the ecu dosnt get any extra fuel unless it commands it at the correct fuel flow and it knows its there and expects it. never have been a fan of any hobs or pedal based fuel boost. no way for the ecu to know.
from mikes testing on the gen3 the stock ecu outputs 150hz to the fpdm, fpdm to pump 9600hz,
DC is halfed feeding the FPDM. and corrected (so to speak) coming out to the pump. i have an oscilloscope and can check the gen2 but the tune settings are identical in this regards on both.
why do we need to keep the FPDM with the brushless controller on the dw440?
i cant find anything on what type of signal it needs to trigger hi/lo. but regardless signal conditioning shouldn't be too bad
if using a voltage booster or brushless controller it would be better to trigger from the stock signal for the lo to hi so you can adjust the pressures accurately. roush does this on the gen2 setups on the phase 2. uses the jms fuelmax ez voltage booster. the ecu dosnt get any extra fuel unless it commands it at the correct fuel flow and it knows its there and expects it. never have been a fan of any hobs or pedal based fuel boost. no way for the ecu to know.
from mikes testing on the gen3 the stock ecu outputs 150hz to the fpdm, fpdm to pump 9600hz,
DC is halfed feeding the FPDM. and corrected (so to speak) coming out to the pump. i have an oscilloscope and can check the gen2 but the tune settings are identical in this regards on both.
why do we need to keep the FPDM with the brushless controller on the dw440?
i cant find anything on what type of signal it needs to trigger hi/lo. but regardless signal conditioning shouldn't be too bad
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