i had my car tuned yesterday and it was leaning out after ~7k rpms. my car made 343whp (dynojet) before it began leaning out. my tuner said my fuel pressure was dropping. what do i have to do to fix it?

mods-
CTSC w/ 3.2"pulley
oem FPR
walbro fuel pump (ctsc)
rc650 injectors
EMS

 

Do you have a guage to verify, the Walbro can put out much more fuel than you require.

 

he did not used the gauge. could it be a faulty fuel pump? i am planning to either buy a new FPR or fuel pump.

 

My guess would be the FPR. i read a post on here of a couple guys having issues with the stock fpr and a Walboro pump. Although lots of people on here are using the stock fpr with out any issues. Including myself.

 

look into the voltage dropping. at higher RPMs the fuel pump voltage drops a volt or two, which makes the pump not flow as much fuel. This can be fixed by hard wiring the fuel pump. Check te basics first though, make sure everything is hooked up right and maybe your OEM FPR is going back, but I doubt it.

 

do you know anyone that had the same problem fix it by hardwiring the pump?
i going to hardwire the fuel pump. hopefully that will solve my problem.