zeep99xj

Damn so it looks like i have to continue the hunt for the right original 40. Anyone know where to find it?

Diesel

40 series is not what you want, the 6 does not create enough pressure to get a clear crisp tone. Series 50 would be recommended, we had a 40 on our Lifted Colorado and it sounded terrible. Sold it to friend with a ram v8 and put a 50 on, very clear, still low enough, not raspy at all.

zeep99xj

Hmm you are one of the first i have seen on here recommend the 50 series though. Im not saying your wrong ive just mostly heard of people running 40 series on their XJs

Diesel

I had a 40 on my lifted Xj, it was raspy and muffled. It attempts to give the six a deep 8 sound and fails terribly. The 6 cylinder just cannot get enough pressure out to give the 40 a clear crisp tone, especially in rpms higher than 3k it sounds like a old ford explorer without a muffler.

zeep99xj

Idk i really like the sound of this super 40 in this clip
I am also going to be running a full 2.5" system so that should help out with a deeper tone right?

Diesel

Yes and no, bigger does equal lower tone, but also less pressure, less pressure equals a raspy muffled sound.

zeep99xj

So which 50 series are you talking about? http://flowmastermufflers.com/index.php?cat=1

Diesel

Call flowmaster, ask for a series 50 muffler with a 2.5 inlet and outlet(or whatever size pipe you are using), I had a 40 at 2.25" on the jeep and it sounded very very raspy, ended up getting a cat back for a wrangler from magnaflow, much better.

If you want Flowmaster, call and get sizes, their website is terrible.

zeep99xj

Does anyone else have an opinon about the super 40? Ive been hearing some nice sound clips of them and i can actually find the one that i need for a god price. Anyone running one that loves it?

mudfrog

They do not make a center in offset out in the original 40. You would need to go to a Super 44 or Super 40. I do have a knock off that is specially made in a C/O and the internals are identical to the Original 40. But those would be your choices.

mudfrog

I used to sell my kits (for the 4.0's) with the Super 40, they sound good but I think the Super 44 sounds better which is why we switched to this muffler. The 44 will give a deeper tone.

I have to disagree. Chances are the Colorado had the inline 5 cyl which will sound like crap on a 40 series. I work with guys who run the 44 and it sounds very good.

Diesel

Had a 40 on a cherokee as well. But Mind you the 44 isnt the same as a 40, 44 probably sounds better on a jeep.

djb383

What's up with all those different chambers and baffles and deflectors and objects that interrupt the smooth exhaust flow........me likes straight-thru, stainless and stealthy.

zeep99xj

Thanks for the help mudfrog. I think im going to order the super 44 and the magnaflow 94136 converter from your site

raypla

Check this out, Banks Header Magnaflow High flow cat and Stainless Catback Fast Man 62MM TB K&N. Gobs of low end 15-16 mpg, staying out of it. Chek out my other videos, there's an in-cab Drifting 14 seconds of Wide open throttle.