Hi all this issue seems to have got worse since the cars been off the road to fit new gearbox,
The problem is when it's first fired up it doesn't like to be revved, it sounds as if it's running on 3 cylinders it's quite rough and pops and bangs if revved and is spluttery and hesitant, however...if I take it for a drive and get it to boost up it cures the problem and it will rev smooth and responsive from then on!?

The engine is a 2.0 silvertop Zetec E (late model)
Fully rebuild with forged pistons rods ect
Focus Rs turbo running 1 bar direct atm
EFI HO inlet manifold
omex 600 ecu
3bar map sensor
New coilpack, leads, plugs,
New ICV
haven't yet tried tps
New coolant temp sensor
Omex air temp sensor

I will be doing a compression test once I get my hands on a gauge

The engine since I've built it is still on a running in map untill I covered 1000 miles and has always had a hunting on idle (the mapper said he couldn't work out what was causing it but it was mapping and running fine other than that) I cannot eliminate this I'm hoping that once remapped (from a cold start) it will cure this, as the engine was hot by the time he got it running nice.

Any help/advice will be much appreciated, thanks.