Ok random problem started on sunday... for the past 2 years i have been running a 2.1 with 720 injectors and the stock turbo(wastegate has been ported) I had a custom intercooler setup, similar to the Isuzu NPR, and my coolant temps were getting to high for me on hot days. So, this past weekend I put the stock radiator and top mount intercooler back on until I come up with a new front mount setup. Now, whenever I drive it and boost around 10psi or above it feels like the car is "hitting a wall". While under full throttle the car will build boost and accelerate, but then cuts out...if i continue to hold the throttle down the car doesn't accelerate, build boost or anything. It will not change until I release the throttle all the way, then its fine again. The car didn't do this before this past weekend, and to me it sounds like the overboost fuel cut, which doesnt make any sense why the rtek would randomly start having a fuel cut......any ideas?

 

Probably a boot leak in one of the fitting.

 

I have checked and everything seems tight, no leaks. Why would I have to release the throttle all the way for it to reset if it was a boost leak?

 

Have you checked error codes? Still say its a boost leak of some sort. Might have to do a pressure test.

 

I did, there are no codes. I took some logs of it happening and the injector p/w drops before it loses boost, so i dont think its gonna be a boost leak, but it cant hurt to double check. Im out of town right now, when I get back home I'll pressure test it just to be sure there isn't a leak.

 

too much fuel is your problem