Take it to a workshop.......

It could be:

Coil pack
leads
crank sensor
fuel pump -just because you can hear it doesn't mean it's not fucked.
Vacuum leak to map sensor
boost leak
poor earthing
crap tune
boost cut

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[CENTER][COLOR=#ff0000]Built Ej207: Semi-closed RA Cases - Wiseco Forgies - Manley rods - BC 272 cams - GDA Heads - billet f/whl - Vi-pec - WbO2 - 800cc Yellow tops - TD05-20G - 409Hp ath @ 1.75bar on E85[/COLOR][/CENTER]