My car won't run the quarter any faster than 79 mph, 0-60 in around 11s. Boost gauge does not go any farther than halfway up the white section ('88-'90 760s have a different boost gauge than 740s, it is not yellow), when other 760s/740s I drove went right up to either the end of it or 3/4 up it and definitely had more pickup(however these were too expensive). Any ideas? I surely hope it's not just because it has 252k, an '88 760T I drove that had 263k had more pickup, was $1500, but was in really poor condition inside, things broken, taped up, etc. Fuel injectors/filter/pumps maybe? Low boost?

Thanks
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Cullen Wassell / Newmarket NH - '90 764ti / 250,000