I have a 97 jeep 5.2. Currently no mods except I cut the exhaust off after my cat. First question is, what gain am I getting from my exhaust. I can feel a power difference there and slightly better mpg's. Also I have a 3 inch cat back in the box but I don't know if it will do anything. I plan on ordering a chip or tuner for it in the future. I am not sure which is the best for me, figured one of you can point me in the right direction. Along with whatever tune I get I am going to order a CAI and 180 thermostat. Please help me out here and lead me in the right direction. Also let me know if there is anything else I can do for performance and what gains I can expect from this all. Any and all help would be appreciated, Thanks..
yes, a 3" exhaust will help over the stock. The engine doesn't have to work as hard and therefore will run more efficiently. I never dyno'd the before and after but it's definitely peppier and the fuel economy increased about .5 mpg
Oh I completely understand what you are saying. I know that if I wanted real power I could put new cam in it and new heads but Im just looking for bolt ons. And I believe it was a confusion because he thought I still had stock exhaust. I know with my exhaust the way it is I am feeling some power all over the rpm range especially higher rpms.
The best performance bolt on mod for the magnum motors besides forced induction is the Mopar performance ecu if you can find one. Best bolt on HP for the bucks if you stay with stock tires. If you get 33's then re gearing is the best. Check Ebay or email Nick firstname.lastname@example.org
Get a set of headers while you can. I have a few sets of the Doug Thorley headers available and once they are gone there won't be any more until Christmas at least. They are great power adders for the ZJ V8. The Thorley headers are the only ones left on the market for the ZJ V8 and they are an excellent setup. PM me if you'd like further information.