flame

iTrader: (13)

Put the fuel pressure gauge on it stick it under the wiper and go for a WOT spin. If it starts losing pressure then you need a fuel pump unless the filter is that restricted in which case you will need a pump next week..........

mannyman84

iTrader: (2)

Doesn't matter. When you are at idle your car doesn't need a Lot of fuel pressure to run. When at WOT u need more fuel. You said the fuel trims are high right? Check them and see if when u step on the gas the trims go down. That's an indication of intake leak. PM if you need more help.

fst100

iTrader: (5)

i didnt get enough sunlight to go and do a wot run with the fuel pressure gauge but at idle the gauge reads 52psi. if i rev/blip it a bit the pressure drops to like 48-49psi then hoevers back to 52psi.

fst100

iTrader: (5)

okay, got some results-rather bad though....at cruising speed its at ~41-43psi and when i romp on it from 2nd gear the pressure drops and at the top of 2nd gear going into 3rd its at 22-23psi 0_0 im not gonna be doing anymore WOT runs until this is fixed. glad nothing went boom yet.

so what could it be? any suggestions and advice?

TIA guys

edit-if its running lean up top i dont get loads of KR though? i didnt remove anything KR related in the ecm

flame

iTrader: (13)

I already told you post #21 top of the page

fst100

iTrader: (5)

will do. gonna change the fuel filter this weekend and check if the fuel pressure at idle changes at all. thanks

edit-FWIW, the fuel filter thats underneath the driver side near the rear wheel, i noticed theres one rubber line thats not connected to the fuel filter(fuel filter only has one inlet/outlet) thats coming from the fuel pump side. dunno if thats important or not to mention.

fst100

iTrader: (5)

Changed the fuel filter, no change in psi at idle. going to cur the trap door tomorrow to get the fuel pump assembly out. Don't have a spare fuel pump but bought the fpr to swap in and see if that fixes the issue.

fst100

iTrader: (5)

swapped the FPR...still no change. i just ordered a racetronix FPA-002 F98.
i bought a thin sheet metal and will make the cover plate for my newly accessible fuel pump access panel

fst100

iTrader: (5)

after screwing up with the lock ring on the racetronix fp i got another one. buttoned everything up and primed the fp 5-6 times. installed the fp pressure gauge and fired the car up and its at a happy 58-59psi at idle compared to 52psi. gotta retuned the maf as its currently rich cause i was messing with the fueling to find out what was wrong originally.