I dont actually know blunty, whatevers happening i think the fueling is far too lean. Ive been out "testing" in it today and at full boost at 6k in 3rd the engine is jerking badly with no acceleration even with your pedal to the metal. Am going to speak to justin tomorrow an if it turns out ive got to have my carb messed with i may need to buy that needle off you.
If its any consequence the carb was previously built for the full T25@15psi.