Originally Posted by BlaxTrax
I heard you can put 251 cams in to increase throughout the entire power band without any modification to the ecu.Also another option is to find a junkyard 2.5 longblock and drop that in.
251 cams only for phase 2 2.2's
a 2.5 long block is a wiring challenge
apart from forced induction the 2.5l short block 2.2l head combo is the most cost efficient way to make more power
op get a NA 2.5L (doesn't matter what year just as long as it's an ej series) and bolt your 2.2L heads to it, run 89 octane and be done with it