hiya guys need help

[zx_volcane]

Well i can supply your first bit of useful information; the 2.2hdi only ever came with 1 turbo...

It's a 407 2.2 twin turbo hdi - as it came out of the factory!

Upgrade wise, you can either choose to ditch the factory twin turbo setup and go for a larger single vnt turbo - not sure how this would work with the current ecu management, and you'll loose that awesome power curve for a bit of lag. Might be easiest solution to fab up and get running if you want all out power.

Or you can go for another twin turbo setup or compound setup - will take some effort, I imagine you'll have to fab up some custom manifolds, and pairing two turbos together is a little more complicated than choosing a single turbo. Again you'll need it mapped to suit.

Going to be a fair amount of effort either way, but should make for an epic project if you're up for it.

Or you can try and push the current setup as far as you can, would be worth talking to some of the hdi mapping gurus to see what the limiting factors are of the oem setup, may not be turbos, could be injectors, hp pump, fmic, clutch, ..etc ...etc