Not a real problem as such, and definately not an overboost cut out, but I'm experiencing a slightly uneven power delivery in 4th/5th at mid revs when coming on to presumably high boost.

No problems 1st,2nd,3rd and no cut out problems at all.

It may just be a trait of the car (UK MY99 car, no mods, 97 ron petrol), but before it goes in for a service next Monday any info would be helpful.

(I never trust main dealer garages)

Cheers

D.