Not sure if this is the right section..

Today my rx developed a problem, when flooring the car the engine suddenly cuts out, it feels just like fuel surge. It initially happened only at 5000rpm then started happening any time fuel throttle is used. It will happily rev whilst using part throttle on the move.

Any ideas what could cause this??

Its single turbo power fc etc btw

 

To expand on my description a little,

The car will happily work whilst using part throttle up to aprox 1 Bar before this happens and will only cut out when full throttle is applied.

Any ideas??