Nickdoesabodygood

I'm going to be installing a Magnaflow Rock Crawler exhaust on my '14 Rubicon. I have a lot of experience installing aftermarket exhaust systems on motorcycles. I've put a pipe on every bike I've ever owned, even my Honda Ruckus, but I've never installed an exhaust on a car or truck before. I know that when putting an exhaust on a bike you need to either re-jet, or on fuel injected bikes re-map, the fuel/air mixture to compensate for the increased airflow that comes with an aftermarket exhaust system.

My question is whether this also needs to be done when installing an exhaust on the jeep. I've seen the programmers like the AEV ProCal, however it seems that all this is used for is recalibrating for altered gear ratios, tire sizes, ect. I haven't seen or heard of any products like I've used on the bikes such as the Dynojet Power Commander where you would install it in the jeep and download fuel maps designed for your engine, exhaust, air intake combination. Wouldn't adding an aftermarket exhaust and air intake on a stock Jeep cause it to run lean and wouldn't this harm the engine?

Thanks in advance.

TOTL Innovations

Switching out the exhaust isnt going to make enough of a difference to need an updated fuel map.

If you were going to remove the cats and do headers, then a new tune would be beneficial but you wont have any issues with just a new exhaust.

Namtaru

I believe what some people do is unplug the battery overnight so the computer re-sets and re-learns