Im wanting to replace the exhaust on my 95 mtx. I have been looking at the sho source equal length y-pipe I know it is the best way to go but my question is catted or uncatted? And if i go with no cats will the resonator on the sho souce catback and mufflers be good enough back pressure? Where I am emissions is not a problem(im not sure about other states) So i was leaning towards no cats. But was not sure if there are any more advantages or disadvantages with going catless? Also if you do run catless will the trigger the CEL?
Exhaust help
- Thread starter sheenut
- Start date
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The catless will not throw a CEL.
The catles tend to be better on the top end where as the catted tend to be better on the low end. The catless have more rasp.
The catles tend to be better on the top end where as the catted tend to be better on the low end. The catless have more rasp.
vortex2450
Buying Parts...
Being as you don't have to worry about emissions; get the catless and use the extra $120 to buy a UDP, rasp issues tend to be more the result of resonators and mufflers in my personal experience.
The engine will like the catless y-pipe more and with an UDP you're probably gonna get a bump in power at the butt dyno
-Josh
The engine will like the catless y-pipe more and with an UDP you're probably gonna get a bump in power at the butt dyno
-Josh
kevinspann
Don't take my advice.
It's gon' be raspy.
luigisho
SHO Member
You may not have emissions testing, but you may need them for visual state inspection. That's why I bought mine with the sho source y-pipe. If I had some way to pass without I would have skipped them. If the rasp is that bad you can always install a resonator of some type.
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Nothing like that in Illinois its either emissions or not at least as far as passenger cars go. Where I live I am almost positive its anything older than 95-96 does not have to take emissions. 5 minutes away in another town in the same county u don't have to take emissions. That's Illinois for u
luigisho
SHO Member
Ok. Here and other places they will fail you for not having equipment as originally configured from the factory. My y-pipe was leaking and they noted that the cats were hollowed out and that is against code...even though they don't test emissions. Wasn't aware of that since I just bought it in November. They also failed me for a burned out fog light bulb. Didn't know that was a paramount piece of equipment either.
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sperold
Last to Know
Go catless and see how it goes. If you don't like it, or need cats later, you can always add them. Don't weld the cat replacement pipe in place while you are experimenting. Having the Y-pipe built in segments make the installation a snap. You can buy the cats later for about the price you are saving.
I got the cats in my system because we have e-testing every 2 years. But I never welded the segmented system after I installed it, and there are no leaks or noise.
I got the cats in my system because we have e-testing every 2 years. But I never welded the segmented system after I installed it, and there are no leaks or noise.
vortex2450
Buying Parts...
I had a (non shosource) catless y-pipe and swapped it out for a magnaflow catted, I like the catless more.
-Josh
-Josh
Ishodu
SHO Member
I like my car catless it has been 7-8 years like that. Although I have a pair of cats on my bench to be installed when I get the car out. These are what you call true High flow units.
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