I used to run a cdti zt previous to Mister Bountyfull. It was re-mapped to 144bhp via superchip on the day of purchase at main dealer. At around 100k I fitted a synergy box and the car was/is still rapid.

I had the car rolling roaded before and after and the original superchip was as it said on the box 144bhp/251lb/ft. After 156bhp/291lb/ft. I then completed the intake mods and removed all the internals of the EGR. I expect it is now around 160bhp/295lb/ft.

The car ran to 164k before I filled it with petrol. I fitted a 14.7k engine ran it for another 10k then sold it to my boss who is still delighted with it.

Food for thought.

Steve.