99superjeep01

There's a reason you need it for inspection. It's illegal to run without one. And as such, talking about it isn't allowed on the forum. Besides, they're not too terrible for flow anyways. And all the work you do to take it out will be pointless the next time you take back to get it inspected.

partsguyct

^ exactly
And besides if flow is an issue to you just run a high flow cat, at least that way you'll be legal and have better flow, you could even jump up a size on the cat but you don't want to remove it completely.

Slick 99 XJ

Looking at buying the flowmaster 44 package from performance curve and wanted to know if this catalytic converter would be a good fit to go with it? It's about have the length compared to the stock one that I have now and wanted to know if it would affect anything in a negative way?
http://performance-curve.com/425250.aspx

JD Cravin

Thats the same one I got and it works great. You'll just need some extra pipe for the length. I can take pics of mine if you want.

XJ Mayhem

When I bought my 98 XJ, the PO had installed a cherry bomb "muffler" and I hate the sound of this thing! It's too loud and annoying. I plan to eventually replace it with something a little more subtle. I want a little bit of rumble but when I step on the gas I don't want it screaming! What's the best option?

my89xj

Flowmaster 40 or 50

Jmb94

My fm40 is a little loud in the cab so that's something to consider. It's got a really nice tone and sound outside the Jeep, though, so it depends on what you want. All told if I had it to do over I would go with an FM50.

bloddy mud

my muffler is completly rotted and im about to cut it off cause all its hanging by is the hanger. all stock exaust, how does the I6 sound with out the muffler? and how loud is it?

XJ Mayhem

What about the FM super 44 or the off road 44?

Jmb94

Like crap. I would compare it to a chinese tractor. If money's an issue, O'reilley's sells raptor mufflers for like 20 bucks. Otherwise Flowmasters and magnaflows both sound pretty good.

Slick 99 XJ

That'd be great if you could. It doesn't affect anything mounting the o2 sensor directly on the cat rather than just after it does it??

JD Cravin

Be prepared to tighten your hangers/pipe connectors SUPER tight and to retighten them again after a hundred miles or so. As any new bolt, they will come loose a couple of times till they settle in.

Hope these pics help and if you have any questions, just ask.

BTW, if you are on the fence about pulling the trigger...do it. You wont find a better deal.

Slick 99 XJ

Thanks man this helps ALOT! i'm going to order everything right now!

partsguyct

Is there any benefit to moving my cat forward before the crossmember? I'm thinking of changing the overall tone by shortening the distance from header to muffler any information on this is greatly appreciated

austinjoe13

Just ordered PC's single chamber muffler. Anyone have any experience with them or are they exactly like the super 10?