Hello. Looking for some thoughts and advise. My99 uk is developing a bit of a boost problem at high speeds in 5th gear only. Car has been remapped by andy Forrest a few months ago. All gears are fine boosting apart from 5th. Doing about 70, put foot down turbo spools up to 1.5bar then the car feels like it's hit a wall. No boost, seems like no revs. The engine sounds like a hose has popped off. (No hoses have). If you let off the accelerator all goes back to normal. Plugs have been regapped and I've got new leads. I'm wondering if it's a coil pack problem? Or fuel pump?
Any help would be appreciated.

Cheers

 

Sounds like your getting a little overboost there and hitting the boost limit which causes fuel cut.
I had the same thing in 5th so I raised my limit by 0.5 and tweaked my WG duty.
Have a word with Andy as I'm sure he will have a look and map out the overboost.

 

Cheers mate. I'll have a word with him.