Are all Cat-backs created equally?

Daryl

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After being shown by the muffler mechanic the other day how my current pipes are hitting/rubbing in numerous places, I got to wondering: Are there significant differences in the routing of available cat-back (or muffler back) aftermarket exhaust systems? Maybe with my lowered suspension the one I have isn’t the best/correct choice?
 

Jakespeeds

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Daryl,

Unless you are tuning for mid to high RPM power then nothing I have seen about street exhaust system testing would lead me to believe there is much of a difference. There are notable differences. But I believe buying from a major manufacturer with high customer satisfaction rating will give you everything you want. Where exactly is the interference problem? If its going over the rear-end I would look at just taking it to a good exhaust shop to have some small modifications made. There is one in El Rio I would recommend.

Jake
 

Daryl

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I suspected that, Jake! I will talk to my muffler guy about massaging the existing pipes further to reduce/eliminate where it’s hitting, and those points being:
1. noticeable and a bit alarming passenger side front of axle housing;
2. a bit of scathing above that point on the bottom side of the floorboard; and
3. the gas tank shroud melt-through atrocity (which we just remedied)
 

joemomma

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Most "big name" cat-backs are going to pretty much follow the factory path. Now with that said - I've seen big differences in the QUALITY of said aftermarket systems. You tend to read about more issues with the cheaper brands compared to the more expensive brands. Maybe the cheaper brand is a little off in a bend here or there, which leads to issues with fitment. A little off at the front can make it a bunch off at the other end. More often that not, it's the material quality where the difference shows.
 

ttocs

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I have to agree that there is a difference in both materials used and the quality of manf between the systems. Cheaper systems use thinner/cheaper materials and they do not care about the quality of fit.
 

PinkieT

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I have to agree that there is a difference in both materials used and the quality of manf between the systems. Cheaper systems use thinner/cheaper materials and they do not care about the quality of fit.
Yep. Just got the cheapest system American Muscle sells. Needed to be cut and welded in a few places in order to fit right. Rear hangers were wrong. Good thing I got an open box system and paid only a third of the regular price.
 

Daryl

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Yeah….. think I’ll let the muffler shop guy dice-n-splice mine and “pass” on an aftermarket replacement. I entirely agree with others here that they’ll all have to follow the same path. and I don’t want old school turn-downs; TOO LOUD AND DRONING sound in the interior!
 

ttocs

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between the fuel lines and the driveshaft and the space the mufflers physically take up there are not a lot of options as to how they can be ran.
 

RAU03MACH

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I think no matter how the system gets done its going to cost you
If you buy materials do it on your own you still need a bender welder hangers
If you buy a kit , sill cost you
Take to a shop , you pay for shop supplies materials, welding
No matter how the job is done , it costs


Me ill buy a kit and install myself
 

Flade

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Regardless of the brand or even the quality, if it is not installed well you will have issues. You can’t just throw it in. It takes a bit of tweaking and occasionally a bend here and there to get it to fit as well as the factory exhaust.
 

TrickVert

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I had a Dynomax cat back on my '87,and was impressed with it at the time. The standout on that was the fact that the polished stainless portion went all the way up and over the axel, where most others were only the straight section from there back. I only polished it up for car shows, and it wasn't really visible, but it was a nice touch.

The shop that installed it took their time and made sure it fit up well. The tips exited evenly and a bit tighter to the bumper cover than the OEM pipes. Looked perfect.
 

J_lope82

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Make sure your engine mounts are in good shape and the engine is not sitting low. If your engine sits low it changes how the exhaust fits and you will find out when you change the engine mounts. I know.
 

Daryl

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Good call, but engine mounts are brand new with the recent engine rebuild.
 

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