ok car is now sorted and running fine basically i was told it was underfuelling and bogging out when it tried boosting above 12psi. we managed to get it up to 1 bar then it had same problem but this time we checked it, it was still fuelling ok? checked everything we could think of and found nothing. turns out it was a plug breaking down so i bought a new set of plugs and it runs fine now and happily boosts up to 17-18 psi and is running 194 bhp so im well happy. i am a bit annoyed though as i had it set up about 4 months ago buy another local tuner and was told i couldnt get any more than about 165 bhp because it wouldnt allow enough fuel.bollocks.