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Jeep Wrangler YJ
YJ General Discussion
Any performance advice for 2.5 4-cylinder?
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<blockquote data-quote="dodgerammit" data-source="post: 440852" data-attributes="member: 21375"><p>Honestly, axle gearing is most likely going to be the best bang for the buck. Gear it lower and it'll accelerate faster. If you're just driving local and on trails, this will make you the most ROI for what you're looking for. Going to (possibly) lose some top end, but from what I've read about the 2.5, they don't really like much over 60mph anyway. </p><p></p><p>You can go cheap and find lower geared axle assemblies in the classifieds. People part these rides out frequently. Plenty upgrade to the FSJ axles and sell off their earlier upgrade attempts with the stock axles. Fakebook Marketflakes almost always will have listings popping up.</p><p></p><p>The second option is to go all out building yours and add traction aides or even do the 8.8 swap if you want.</p><p></p><p>Going to the multi-hole injectors is on my long term list (4.0), but not for any performance gains. Just a better atomization of fuel for smoother idle. </p><p>The whole "increases performance/mileage gains" thing with injectors has pretty much been debunked from what I've seen.</p></blockquote><p></p>
[QUOTE="dodgerammit, post: 440852, member: 21375"] Honestly, axle gearing is most likely going to be the best bang for the buck. Gear it lower and it'll accelerate faster. If you're just driving local and on trails, this will make you the most ROI for what you're looking for. Going to (possibly) lose some top end, but from what I've read about the 2.5, they don't really like much over 60mph anyway. You can go cheap and find lower geared axle assemblies in the classifieds. People part these rides out frequently. Plenty upgrade to the FSJ axles and sell off their earlier upgrade attempts with the stock axles. Fakebook Marketflakes almost always will have listings popping up. The second option is to go all out building yours and add traction aides or even do the 8.8 swap if you want. Going to the multi-hole injectors is on my long term list (4.0), but not for any performance gains. Just a better atomization of fuel for smoother idle. The whole "increases performance/mileage gains" thing with injectors has pretty much been debunked from what I've seen. [/QUOTE]
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Jeep Wrangler YJ
YJ General Discussion
Any performance advice for 2.5 4-cylinder?
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