[guardian7]

Let me just start off by saying that every Jeep is different. I don't know why that is but they are.... well, except for the fact that they will just empty every pocket of money that is. After performing all the mentioned mods on my 2.5L in my opinion the 4.88's was the biggest gain but costly, my second best gain was a 4.0L throttle body swap which was cheap and easy. All the small mods do add up to some real gain but nobody ever does them all at once to get a good before and after comparison. The Flex-a-lite E-fan is a nice mod but dont use the straight blade because they are very loud, use the S-blade models!