Difference between going with mufflers instead of catback on GT

Evenflow

yellow snow cone lover
Nov 4, 2004
116
0
16
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Im just going to purchase some Super 40 mufflers, and down the road a prochamber/OR pipe.

Just wondering, I know I wont get any gains off a muffler, but it will flow better than the stocks. But, will there be any gains from a whole new catback

thanks.
 
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You'll gain a bit more power from a whole cat-back. This is because the cat-back has mandrel-bent tubing, and it usually has bigger sized piping then the stock system (2.25" vs. 2.5"). Also, there is some SMALL weight savings (usually) vs an aftermarket cat-back and a stock one.
 
If you'r going to get just the mufflers alone, buy them in the 2 1/2" diameter and have reducers welded on at either end. That way, later on down the road, if you decide to step up to a full cat back, you don't need to buy new mufflers again.
 
weight savings, a little more power, slightly different tone, those are all different between mufflers only and the full cat-back.

The stock cat-back really does weigh a lot, the SLP loudmouth is probably 15lbs lighter by my guess. Plus the tips look amazing :drool:
 
"If you'r going to get just the mufflers alone, buy them in the 2 1/2" diameter and have reducers welded on at either end. That way, later on down the road, if you decide to step up to a full cat back, you don't need to buy new mufflers again."

Well, I was planning on just welding in the mufflers to the stock piping. So instead of welding the muffs into the stock piping I should get the reducers welded into both the stock pipe and the new muffler?

Also, how much weight would be dropped from stock mufflers, to the Super 40's.
I will probably be getting either a prochamber, or mustangtuning.com O/R X pipe, would this be a problem with the reducers/stock piping/mufflers?
 
Evenflow said:
"If you'r going to get just the mufflers alone, buy them in the 2 1/2" diameter and have reducers welded on at either end. That way, later on down the road, if you decide to step up to a full cat back, you don't need to buy new mufflers again."

Well, I was planning on just welding in the mufflers to the stock piping. So instead of welding the muffs into the stock piping I should get the reducers welded into both the stock pipe and the new muffler?

Also, how much weight would be dropped from stock mufflers, to the Super 40's.
I will probably be getting either a prochamber, or mustangtuning.com O/R X pipe, would this be a problem with the reducers/stock piping/mufflers?
Just get the weld ins - aint nothing wrong with that. Getting 2.5 rather than 2.25 because "if you decide to step up to a full cat back, you don't need to buy new mufflers again" makes little sense because every catback system I know of comes with mufflers!
I've got both weld ins and ful catback in the garage...the catback is a cleaner sound, the weld ins are a bit raspier. Both have catted H pipes. My 02 is 2.5" all the way, the wife's 01 is only 2.25" from the 40's on back.
Still, I'd get the 2.5" muffs...easier to sell down the road. The reducers are attached to the muffs and the flow tubes on the front side and then to the muffs and tailpipes on the back side...and decent muffler shop can handle this work in an hour or so.
 
^ Yea, I guess I will just get them welded in, My neighbor owns a Meineki shop, so hes cutting me a deal on the install..

So down the road if I do decide for a cat-back can I just get everything BUT the mufflers?
 
"I believe that Summit and Jegs sell a couple of universal kits, that don't include mufflers. Otherwise, you could always have your own made up."

Thats what im going to do. I know I will pick up more power with the midpipe than going with a whole new catback, so why not just get mufflers/midpipe then down the road maybe get a custom catback or something.