fuel cut

[jed344]

ok i have a issue with my gsx. It started one day to hit fuel cut. ( yes i know what fuel cut is i have been around boosted cars a while) turned out my pump was bad. replaced with a Wally 255, then followed with FFWD fuel kit so my car has all steel braided -6an lines with fuel lab fuel filter 1g rail auromotive FPR set at 43 psi. now the issue when my car is started i can rev it and it will literally 2step at about 5000rpm then itll increase to 6000rpm then about stop and sometimes under heavy boosting it will hit fuel cut. i am running a t25 at 16psi. have intake, catback aswell for mods. just replaced with ngk 6's and gapped them myself to .028 or i think. no boost leaks i checked. could it be that because my pump is not rewired i am hitting fuel cut? im really lost i have tried about everythingg

 

[Red97Eclipseboy]

You know what fuel-cut is, yet you're asking if a non-rewired 255 is maybe why you're getting fuel-cut at 16psi from a T25? Okay...

Maybe your MAS is bad. And what PSI did your boost-leak test go to? How long did the air hold? Did you spray soapy water around everything? I bet you didn't.

 

[steve]

Fuel cut on our cars has nothing to do with the fuel pump, it's the ECU seeing too much air and turning off the injectors and spark.

You don't list any ECU mods so if the car is stuttering you have a ignition or some other problem.

 

[HadesOmega]

If your running a T25 you shouldn't get fuel cut unless something is not connected right. If I remember correctly you can boost 16 psi on a T25 with basic mods. Did you check your intake piping is on correctly ? I forgot to connect my MAF connector up one time and I hit fuel cut, it sucked. COuld be a bad sensor also.

 

[jed344]

its hooked up correctly. ecu is factory. it ran fine today with no issues only does it some of the time. so i dont know.

 

[steve]

Have you pressure tested the intake yet? If your really hitting fuel cut it will be because you have a boost leak.

 

[jed344]

ima re test it tomorow i must have a leak i have checked everything else over again. and yes it is for sure fuel cut it will spool up and then litterally feel like the car hits a wall