New question, my XJ has stock exhaust. But I want my XJ to sound raw as ****. Any suggestion/recommendation as of what I should go with/do?

 

Cut the muffler off

 

Looking for more along the lines of something I need to pay for lol.

 

Flowmaster 44

 

2.5" pipe, high flow cat, and a 4"x18" slash cut tip. It ripped my friends' eardrums out The cops didn't care too much for it though It sounded pretty good too!
That's p**** s***!

 

Nice thanks bro

 

Yeah. ijust [picked up a old glasspack for free. Had to PB blast the hell out of the bolots to loosen em from the rest of it. but i have it sittin in my hatch just waitin to be put on. hopefully this will take away some of the roar and help a lil. I wasat JY today lookin for a upper m0otor mount for the camry i traded for the camry(the engine nearly blew on himthe night we traded. so i felt bad and wanted to help him.) i found all sorts of nice stuff there. like really nice distributer wires and the 703 injectors. all free. and k. by the IAC u mean my CAI right? srry i know im a newb. just tryin to learn one step at a time. Correction. i traded the camry for hius jeep and the motor mount bushing ripped on him., so i wanted to help him outp becuz me and him have been pretty cool about everything.

 

Ok on the front facing side of your throttle body there are two sensors, the one on left towards the vavle cover is your iac. It should be two torques bolts. Be careful taking them out. Slowly pull the iac out. Do not push or pull on the plunger. Apply a toothbrush and brake cleaner to it and put it back in.

 

Ok thanks. i will do that now. and how much will that help? will it help with the mpg or the power issue on hills?

 

So I was looking to change my exhaust, a little for performance, a little to sound beefy and because my cat is rusted like crazy and I need to fix my O2 sensor.

My question is what is the stock outlet size on a 98 sport xj downpipe.
Can I use this cat: http://www.ebay.com/itm/MagnaFlow-94...d68d56&vxp=mtr
With
This muffler: http://www.autozone.com/autozone/acc...er=276350_0_0_
With
This tailpipe: http://www.jegs.com/i/Dynomax/289/44171/10002/-1
?
And do I need to change the downpipe with all this? How hard would that be?
And does this seem like something you would try or what do you think I would get from this setup?

 

If it dirty, it should help.

 

Id like to say 2.25 if I were you I would upgrade everything to 2.5"

 

Ok. i did it. It wasnt very dirty. I didnt have any brake cleaner -__-. so i used carb cleaner. which did thetrick. started it up. still idles rough. but hopefully after i get the vacuum leaks figured out i will fix that. Took a bit and nieghbors werent happy i had all my fogg and trail lights on (lit up entire neighborhood but hey. i did it becuz i CAN and plus i needed the liht) but yeah i cleaned it up pretty well.

 

this is all well and good but he should have been runnin some water thru that jet pump on the back.... I always ran water thru the inlet with a hose to keep that plastic bushing in there wet and not heat up and come apart. jet-o-vators are cool to have on a berkeley pump;

 

Hmm how does the vacuum line going from the map sensor to the throttle body look?