went to look at the car today, and swaped till friday jus to get them checked out and will finalise deal on friday, the car seems tite engine seems good, but theres an issue with the boost, it has a boost controller valve under the bonnet and the car doesn seem to be boosting rite, wen you put your foot down say at 100k in 5th gear wen the boost builds up full it jus collapses like looses the power after a sec as if all pressure jus dropped, and the boost is going up the hole way to .7 on the standard gauge on the clocks, where i think shud be jus .5, so any ideas what cukld be wrong? hoses connected wrong or something maybe? the mechanic reckons the engine is mint but jus that lil issue, so take it till friday see can it be fixed and if not wont be taking it