ok, 98 z24, havin alitlle misfire i think, not all the time, i first noticed it when i was merging onto I-40 and gave in some throttle to go and it started to surge or miss, or sputter. now bout 97% of the time when i give it 95-100% throttle it does this, but if i kinda baby it it doesnt do it. i have changed my tps and fpr, and cleaned the throttle body and injectors. could it be carbon build up on my egr? any help would be awesome guys.