I'm concerned one of my fuel pumps may be dead, as suggested by someone else. I've attached a portion of a datalog showing injector pressure drop of 27 psi in the 5,000 to 5,350 RPM range during WOT. The FPDC is less than 80%. I'm confused. Shouldn't the injector pressure drop remain pretty constant around 39 psi.
I've got a ported Eaton, 2.93" upper, SCT BA-2600 MAF, 47# injectors, 13 psi of boost and a KB BAP running with a Hobbs switch. The car has been dyno'd just under 500 RWHP.
This isn't consistent, but I have seen low pressures like this during datalogs of other pulls. When I had the car dynotuned for the SCT MAF, the A/F was in the middle upper 11's and it briefly jumped up just over 12 then went back down below 12 before the pull was over. This too concerns me.
If I'm barking up the wring tree, please educate me.
I've got a ported Eaton, 2.93" upper, SCT BA-2600 MAF, 47# injectors, 13 psi of boost and a KB BAP running with a Hobbs switch. The car has been dyno'd just under 500 RWHP.
This isn't consistent, but I have seen low pressures like this during datalogs of other pulls. When I had the car dynotuned for the SCT MAF, the A/F was in the middle upper 11's and it briefly jumped up just over 12 then went back down below 12 before the pull was over. This too concerns me.
If I'm barking up the wring tree, please educate me.
