My turbo engine in my ute starts and idles, but won't rev and nearly stalls out when pushing down on the accelerator. Has anyone come across this problem. Check engine light is NOT showing on the dash..

 

sounds like a throttle problem... take the intake pipe off the throttle and push the throttle blade a little to see if the revs go up, if so then it's something to do with the accelerator pedal or the wiring between it and the actual throttle control mechanisms.

Thanks mate. I have removed the intake pipe off the throttle body and all is ok. Its clean and the butterfly valve opens when the pedal is down. Now what's happening is with the engine idling and I push the pedal to the floor, the engine hesitates and nearly stalls, but then will spike and rev right up. Its a manual and has no power to take off and drive. 

is it tuned?

Yes, its not standard. Has had a great deal of money spent on the engine

 

It runs 2 tunes, 98 pump fuel and e85

has it done this symptom since it's been tuned or since some other event happened to precede it?

I have had the car for 4 years now. This is the first time it has done this. Been running great until the other day. Driving along at 100km/h on the highway and it just lost power, coasted to the side of the road, engine was still running but wouldn't rev pushing down the pedal. Had to get it towed home. It will move off on idle, but nothing there to pick up speed. Just wants to stall out, when pushing the pedal down.  Will hit boost and high revs stilling still, but after it splutters and nearly stalls.

hmm... sounds like something pretty tricky to diagnose, but maybe a collapsed cat putting tons of back-pressure on the system is a guess... I'd be taking it back to the tuner for diagnosis.

Fuel pump maybe

Get an obd reader and scan for error codes, might narrow down the issue