cutting out at 3800 rpms

[wuestda]

Ifr your stock turbo hits 12psi - the fuel is cut-off until it drops to ten.
This MAY be your issue. The other possibility is lean fuel mix (injectors / fuel pressure)The jerking is pretty severe when fuel cut occurs... Its like keeping the gas floored and turning you ignition key on and off.

If this is actually your issue, then your wastegate has probably been shimmed to let the turbo spool higher than 8 pounds. You are a full 25% over the assigned boost range, so that's why it is a pretty earth-shaking cutout. SOLUTION: FCD Fuel Cut Defencer. Watch out if you get one: the wiring diagram that comes with it sucks - look on this and supramania for correct diagrams. This is not a simple upgrade - you need to pull apart the passenger side dash and extract your ECU. It's dark cramped, and a royal pain, but the results are pretty fantastic. I have stock CT-26 turbo and it can and does hold boosts above 20psi now without issues. I have peaked boost at 28.5 psi using an AEM tru-boost guage / solenoid. The car is a lot of fun! I will say that!!

Originally Posted by wingshooter92

OK i have had this problem sience i bought this car and its getting annoying we had the car checked my a toyota dealership they coludnt fiure a way to check fuel pressure is there a way also i am thinking about putting a nerw fuel pump and pulling the injectors well just needed to ask please respond