Non taken, but yeah since am living far away from jeep civilization i am restrained to only to some things. I want sound, i love a real loud sound from the jeep. The gibson dual has a great tone, but am still trying to make it louder. I would also not like to loose power and if the gibson made me loose power i would like to get it back up and while am at it try to gain some extra. You are rite i don't know what iam doing thats why am here to get help from people who tried and/ or know how to do that. And since iam so far away i pay nearly double for everything thats why am asking so much to not make a ireversible mistake. I would like to know how i can do that? And i would like to know whats the programer, if someone can explain please?

 

I'm not familiar with any of the Jeep programmers in particular, but I've had a LOT of experience with programmers in general and they all work pretty much the same. They change timing and fuel curves to add additional power. The thing is, and understand this is MY personal opinion here, I haven't seen a programmer that "I" would plunk down that much coin for, because they only add like 11HP?!?!?!? I ain't sure you'd even feel that. As far as just wantin it louder, Maybe you shouldda just tried knockin the stock muffler off the original system and replacing it with just a tail pipe. Probably wouldda picked up more power than the Gibson AND been louder. Just a thought. ....and lastly, I didn't mean to imply that you didn't know what you're doing. No way, no how. That ain't me. I was just suggesting that you maybe search the forum and try to find out BEFORE you spend the money, that's all.

 

Hehe its fine cuz i really don't know that much. I am a very all vehicle intrested type of guy and am in love in the wrangler since the yj, but the problem we are cut from all the jeep goodies around here and i don't have access to much tools and space. I love working on engines and stuff, but i don't have where to. All i know is the basics and, u know exhaust system , air filter, header, cams and this adds power, ohh and nitrous, hehe. So i really don't know what to combine for the jk to give it the groul and the power would be nice too. Iam open for any suggestions and explanations from anyone. And yeah without the muffler its a bit louder, but doesn't look good. The gibson looks good and sounds different, nice growl to it. So thanks for replying and i would like some more combinations or opinion on how to get the outcome i want, which probably many want too, just assuming.

 

some help maybe?

 

What he said, leave the pre02Cats, the 02 sensors work off these to control air/fuel ratio through the PCM. In fbody's (TransAms, Camaros 93-02) we would use 02 SIMS for the after-Cats 02 sensors. These cars had a total of 4, the precat or first 2 controlled air/fuel via PCM, the aftercat 02s were a backup that were fooled by simulating the variable fluctuating (within a specific parameter) resistance. It was a relatively cheap performance gain.

Remove the afterCats if anything, I did, seat of my pants hp gain, no less no more and no ill effect whatsoever on performance, tuning, etc.

 

Reports are good for the programmers in the jk so far.. they seem to make more difference in the jk than in some. The reprogrammers in the tj did almost nothing on the 4.0 but on the 3.8 with the fly by wire its said to remove the computer hesitation that is associated with the fly by wire design.. I know they make a big difference in the ford diesels..
Keep searching the forum..
and have fun!

 

The Ricer crowd uses test tube kits that come with fittings so that you can plug in your O2 sensors if needed. I don't see why you couldn't find a muffler shop that would fab up a custom Y-Pipe test tube for your JK with these fittings so you could plug the O2 sensors in. Strictly for off-road use of course. You would first have to remove the OEM Y-Pipe and take it to them to match up. While you are at it add some headers by Banks or Gibson and some free flowing exhaust. Many people here would make the comment that you will lose your low end torque with this set up but on the other hand this engine doesn't make much low end torque anyway and I'm sure you would really wake up this engine around 3000-4000 rpm which is pretty much the only range that this motor makes any useable horsepower or torque anyway.

 

you should swap out the gibson muffler for a glasspack.

 

I wish there would be a shop that could help me in all these things. We don't have that good mechanics for moding here, all they do is repair and replace mostly stock parts. Its very hard to find a good moding shop or person. And i bet the headers are very expensive and would cost double for the shipping, which kind of makes it a no. The programer is i hope light? and not that expensive? plus the air filter is not heavy too. any more small add ons to give power?

 

Here's a good link about JK exhaust LINK