Hi peeps

My TD5 110 holds back, misses when accelerating hard, you would never know the problem was there with usual gentle driving, but hit a big hill, or overtake and its there. Doesnt feel like a fuel starvation issue as the engine continues on ok and revs still rise. Had a recent new wiring loom to fix the usual missfire problem, so deffo not that. Has been chipped by JE engineering, and had EGR removed fully.

Any ideas????