More than likely high speed needle setting, hard to tell without seeing it, if it's running red hot probably too lean, if not the fact you're having to blip the throttle means you could be having to clear excess fuel from the engine as in running too rich. Certainly not an issue with Hyper engines as mine runs fine. Try returning the high speed needle to factory settings, haven't got the manual to hand at the mo, google search should get you an answer.
Cheers
Adam
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