quick question. i was using bcp6es-11 gapped down to .8, have been for ages with no troubles at all on stockish motors. put a gt30 and other stuff on my 25 and just before the tune put in some bkr7e's after reading about them on here. car didnt make as much power as it should however thats probably caused by other things. car was running fine at first and allways runs fine on cooler days/nights, but when its slightly warmer it misses pretty hard occasionaly under full load on high boost (17psi). could this be the colder plugs? or something else? have splitfires which are near new, good condition ignitor, only think that hasnt been changed is the coilpack loom.