fpss problems
05-22-2003 | 08:40 AM
#1
fpss problems I ordered a new fpss from thunder, they said calibrated for 50 psi.
I grounded my noids to the fpss. I have been getting surging, so i bypassed the fpss and that is the culprit.
I am ~380ish n/a, and am spraying a 100 shot. I have an intank walbro 340.
Could i really be below 50 psi? I've also heard not to ground the noids to the fpss, even though i've read plenty saying to do that. Should I ground the low voltage side to the fpss?
I grounded my noids to the fpss. I have been getting surging, so i bypassed the fpss and that is the culprit.
I am ~380ish n/a, and am spraying a 100 shot. I have an intank walbro 340.
Could i really be below 50 psi? I've also heard not to ground the noids to the fpss, even though i've read plenty saying to do that. Should I ground the low voltage side to the fpss?
05-22-2003 | 11:26 AM
#2
Re: fpss problems I personally always use the FPSS in the low current circuit(relay control). My reasoning is I want the lowest current near any fuel. Thats just me.
As far as your surging....your FPSS should be adjustable. Just adjust it down till there is no surging. You definately could be getting a fuel spike below 50 psi momentarily. You have the right pump...everything should be fine. If there are any suspicions on fuel delivery...go to the dyno and make some runs with a wideband to make sure.
As far as your surging....your FPSS should be adjustable. Just adjust it down till there is no surging. You definately could be getting a fuel spike below 50 psi momentarily. You have the right pump...everything should be fine. If there are any suspicions on fuel delivery...go to the dyno and make some runs with a wideband to make sure.
