Smith-02

too much fuel? have you tried just running the oem pump?

88dx

Only thing that fixes too much fuel is more air

con

no I can only run a external pump so no stockers

thats tough at idle :P

con

according to napa the stock pump is 55 gph. Seams high for stock I always thought they were only about 90 lph.

con

OK I hooked up my 255lph to my heater switch for some sweet *** power control and on speed 2 it works perfect so I know the pump is too big, dont understand why but it is what it is. I dont know if I should rock a 190 or 150lph now.

cliffnotes: HR needs to know the flow rateing of a stock 91 civic si pump :1

con

Finnaly after combing the hole ------- world wide web I found

dohc vtec 131lph or 34.5gph
dohc & sohc 80lph or 21gph

back on track

78NOVA

haha thats ------ classic.......one hell of a way to regulate power, with a linear potentiometer. :1

Tom-Guy

People have made 300 whp off of CX pumps, a 91 Si should be the same. I've made 325 Mustang/375 Dynojet off of an ITR pump with fat wire ran to it, no big deal.

If I were you I'd rig a WOT switch that actuates a relay bypassing your resistor deal. The FI Toyotas came like that from the factory for whatever reason, it's not an uncommon concept.

con

the ford lightning setup I had for my f150 4x4 had two intank pumps and a resistor, the ecu would by pass the resistor when it needed more fuel

Smith-02

not sure if this was up above, but how big is your return line, from the fpr?

and jago,

ding ding