okay so im running around 19-20 psi...and i have all of the following mods in my sig installed except a walbro 255....i seem to be hitting fuel cut at like 5k rpms and idk why...the lines are all in good shape so i dont think it could be a leak

can someone help me out

 

How do you know it's fuel cut?
Had a similar issue with my car, but it was overboosting an the stock ECU was cutting out the power when it got to 1.5 bar.

 

if you havne't been tuned for the mods you may very well be hitting fuel cut...get a tune, that'll fix the fuel cut and make the car run much better with the mods.

 

yeah but doesnt the evo ecu cut out at 24psi?

 

not on my jap spec '01

 

boost is just a measurement of back pressure in the intake...what's important is airflow and anytime you improve the volumetric efficiency of the engine with better exhaust and intake mods you're moving more air through the engine.

so it's possible to hit fuel cut without running high boost.

 

The fuel cut limit also tapers down toward redline.

 

have you been tuned? My car did the same thing at 6000rpm, got tuned now pulls all the way to redline.

 

no im supposed to be tuned on saturday...

i turned the boost down to 16 and 17 last night, didnt hit fuel cut at all...then turned it back to 18 19 and it did it again...and its around 70 75 degrees here so im guessing that plays into it...so basically a tune should take care of this?

 

yes

 

just get a tune and you'll be fine

 

you car is starving..........so feed her........LOL

 

Istall the fuel pump then get the tune.

 

So did the tune fix it then?