The problem I am having is:

The car will run fine (at idle and when reving) but if you slowly rev it up to about 3500 RPM and it will start to stutter, and not rev over that RPM. However If I can cruising in 5th, and drop it back to 3rd (where the revs stay over 4000rpm, it drives perfectly)

The problem exists between 3.5 and 4 grand. Everything to do with the ignition and fuel system is brand new, and the tune has been checked by Rotormotion and is fine.

I havent tried any other ecu's as the Microtech is hard wired in.

If I cant find another lt10's im going to re-pin the plugs to suit the older version LT8, which my friend has to test.