Resolved dies in boost/3k rpm

[94allwheeldsm]

Ive got a buddies car here that will not go into boost. If I slowly press the throttle I can go to any rpm/boost. As soon as I stomp it and gets to boost it stutters, bogs out, dies. Ive put a new ECU wiring harness and all sensors in this car with no luck. I'm no newb and have never had a car do this without figuring it out! I'm so stumped! Any ideas/input is appreciated! Thanks in advance.

 

[pauleyman]

Mods? Plugs and gap? More info.

 

[GSXgreen]

Your fuel pump may be dying. Do you have a way to check fuel pressor?

 

[94allwheeldsm]

Sorry. Mods are cams(unknown), new bpr 7's .028 gap, 450cc inj., 17c, NO boost leaks. 3" exhaust. Jackal/ostrich.

 

[pauleyman]

Boost? Exhaust? Tune changes?
Fuel trims?

 

[jakk220]

What are the afr's looking like when this happens?

 

[Dsmkauai]

How high did you boost leak test to? Check exhaust for any pre-turbo leaks. Does the turbo have any shaft play?

 

[94allwheeldsm]

Its the stock basemap boost is set around 15. Full 3" exhaust. Turbo is in good shape no excessive shaft play. We BLT to 25psi.

 

[94allwheeldsm]

Fuel Pump was loose on the hanger! Previous owner decided a zip tie would be efficient enough to hold it. Thanks for the tips!

 

[miliman13]

I need to check this.

 

[miliman13]

Fuel Pump was loose on the hanger! Previous owner decided a zip tie would be efficient enough to hold it. Thanks for the tips!

Having same problem, can you explain? By lose? Not plugged in or bolted..

 

[94allwheeldsm]

Every time the pressure increased it pushed the pump out of the tube causeing pressure let off.

 

[GSXgreen]

It's amazing it worked at all. Good to hear you found the problem.

 

[94allwheeldsm]

I agree! It must have been hold just enough at 43 psi, but once the pressure started raising 1 to 1 it just couldn't hold it. I'm very surprised it even held in there. SMH a zip tie...

 

[miliman13]

This seriously sounds like my problem, still haven't checked , life right? So the hose was held in by a zippy? Wow

 

[94allwheeldsm]

No, the fuel pump was held on the hanger by a zip tie. There wasn't enough force to hold the pump up in the metal tube.