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New Muff!

Mudderoy

Mudderoy

NAXJA Forum User
Location
Katy, Texas
Ordered from Summit Racing and had installed today...

JeepNewMufflerCat.jpg


Nice rumble and not too loud. Mudderoy like.

Flowmaster Extreme Off-Road Series Mufflers (Super 44 on the box)
MagnaFlow Direct-Fit Catalytic Converters
 
Thanks!

I'm not sure. I had the stock muffler on the XJ for the last 10 years. I can only compare it to that. :(
 
Looks great, and also looks like it can take some abuse. Enjoy the sound of that beautiful 4.0 :)
 
You can tell it's tougher than the sheet metal of a stock muffler. That is 14 gauge diamond plate.
 
very nice i was going to get that one but it is a little more expencive so i just got the super 44 it does sound good even with a cracked header...
 
Crimzon316 said:
very nice i was going to get that one but it is a little more expencive so i just got the super 44 it does sound good even with a cracked header...
Click to expand...

I replaced the header about ahhh 6 months ago now.

I had a crack in the pipe between the cat and the muff. I repaired that "temp" then ordered the new cat and muffler.

Strange thing now, I don't have this massive vibrations at 70 mph +

I'll have to wait and see but the new cat and muffler may have smoothed things out. I was keeping it at 70 for gas mileage and due to the vibrations.

I was 80 mph and 3000 rpm all the highway miles home. It was nice.
 
hot_rod_hooligans said:
Looks kinda familiar, but with better looking welds:
DSC01433.jpg

Who makes the cat?





Cat.... muff....... hahahahahaha
Click to expand...

Yep, I'm pretty sure it was your post that made me want to get this muffler.
 
hot_rod_hooligans said:
Lol, makes since to get it, if your going to spend $100(?) on a muffler, might as well be one that you aren't going to crush first rock you hit it on.
Click to expand...

$89 for the muffler and $113 for the catalytic converter. An amazing $12 for shipping!
 
Mudderoy said:
This was from Summit. I wonder why this one was so much more.
Click to expand...

SwampDonkeyXJ said:
Because you bought the direct fit one instead of the universal. Universals don't have the bung for the O2 sensor.
Click to expand...

Mudderoy, is that a O2 sensor I see behind your cat? If so then that is the big difference. Mine never had the O2 sensor there to begin with, I think mine are up by the Manifold cats(at least thats what I think those are).
 
SwampDonkeyXJ said:
Because you bought the direct fit one instead of the universal. Universals don't have the bung for the O2 sensor.
Click to expand...

Thanks for the answer. Yep, after I ordered it I was concerned it wouldn't have an O2 receptacle. I was pleasantly surprised when I received it and it had one. Chalk another one up to dumb luck.
 
Mr_Random said:
That's pretty schweet, I will definately consider it... Just hope the diamond plate steel isn't just a gimmick...
Click to expand...

The guy who owned the muffler shop that installed mine was impressed by it. It weighs about 12 pounds, and as I said above, it is 14 gauge diamond plate. When you rap your knuckles on it you can tell it is much tougher than the stock muffler. :D
 
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