Originally Posted by DylanRhodes45
Done some research on this topic and still not quite satisfied. Are there any mods you can do to a 4-banger that REALLY make a difference in terms of performance?
Upgrade to a 4.0L lol. I'm looking at getting an XJ with the 4.0 cuz the 2.5L YJ isn't cutting it.
Not really a mod, but you might want to run seafoam through your gas tank a few times to help clean out some engine gunk, that stuff made a big difference in mine. When I first got it, it was chugging like a boat, ran some sea foam through it and she runs way smoother and quieter now.
I pulled the cones out of the air box, not sure if that made a difference.