ive got a boosted h22, it recently started having a misfire/bog at high rpm, i can put a spark tester on a plug wire a rev it up even in nuetral and @ high rpm any were from 5.5 up it starts mising and i can see the spark go from bright to dim when it misses ive change the ignitor with 3 others i had and it does the same thing, ive got a volt gauge @ the battery to check to see if im loosing voltage but its a steady 14v, does anyone have any idea were to go from here, i was gona buy a new dizzy but the ignitor would be the only thing i can see causing this and ive changed it with 3 good ones so im clue less please help!

 

ICM , Coil ...