Looking to add cats to my exhaust setup

[CobraTampa]

Just like the title says, I'm looking to add cats to my current set up for a couple of reasons. Right now, I'm running stock manifolds, o/r xpipe and Borla stingers. Everything else on the car is bone stock. No pulley, no tune....stock. The gas smell is horrible and i hate to even say it, when I get on it, it's just so damn loud. Like really raspy loud. I can't even hear my supercharger at WOT, lol. After speaking with my local shop my options are to buy some high-flow cats and weld them into the xpipe or buy a whole new catted midpipe. I'm leaning towards just buying the cats but I read somewhere that ceramic cats aren't good for forced induction cars and that you should go with the metallic substrate ones. Any suggestions? American Muscle and LMR both sell a number of options but wanted to ask your opinions.

Anybody here ever weld in just cats? If so did it solve the issue with the strong gas smell and rapsy exhaust tones?

 

[13COBRA]

Rather than chopping up what you have, I would get a new X/H pipe with catalytic converters.

The X pipe by itself will be raspy, the H pipe will be more throaty.

 

[98 svt]

Everything I've read about aftermarket cats is usually bad. In the sense that they don't last, some don't even keep the CEL off from the get-go either. I'm sure many will chime in here though and contradict me.

They will help with the rasp, but so will an H pipe.

 

[01yellercobra]

I kind of had this happen. I blew out the original cats on my Bassani X so it was basically an off road pipe. As you've learned it's stupid loud. I ended up picking up another set of cats from Bassani and it quieted it back down. Whatever substrate Bassani uses seems to be ok. This is the second supercharged car I've had them on and they're holding up fine. (knock on wood)

So either way adding cats will help. The only H pipe I've run my Stingers with is the stock one and I didn't like the way it sounded. It just had a weird tone to it.

 

[Roots-type]

Magnaflow makes good cats

 

[cobracide]

My MRT H with cats sounds nice, no rasp with borla 14858 catback. Not stingers. You should be using chambered mufflers with an H for the best "classic" muscle car sound.

The stinger/X combo is pure rasp if that is what is desired.

 

[CobraBob]

My MRT H with cats sounds nice, no rasp with borla 14858 catback. Not stingers. You should be using chambered mufflers with an H for the best "classic" muscle car sound.

The stinger/X combo is pure rasp if that is what is desired.

I agree!! This would be my recommendation for the OP.

The MRT catted H-pipe will be more throaty, as Nick said. Better sound IMO over the X-pipe. The Stingers are one of the loudest mufflers available, so a new muffler would be a big difference while still being loud enough to remind you you're not driving a Tesla Plaid. LOL. I used to use a Steeda/Borla catback back in the day that for me was perfect.

 

[Vinnie_B]

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[robvas]

I bought a catted BBK H pipe. Installed in minutes.
Quieted it down a little, 'felt' like I got some torque on the low end, didn't stink anymore. CEL was already tuned out so I don't know if that mattered. Only downside is that it was $500

 

[hotcobra03]

I've been catless since new .

I can smell exhaust but it's not like you can't stand behind it and breathe,,

I do have a hand tuner tune ,

We don't have testing here ,so I can't say if it works where you get tested,,

But my rear 02s are turned on and no issues with cel,

 

[01yellercobra]

My MRT H with cats sounds nice, no rasp with borla 14858 catback. Not stingers. You should be using chambered mufflers with an H for the best "classic" muscle car sound.

The stinger/X combo is pure rasp if that is what is desired.

I really wish Borla would bring that catback back for the IRS. I'd like something a little quieter, but I want to stick with Borla.

 

[CobraTampa]

Thanks for all the info. Unfortunately there are very few options for catted hpipes unless you want to spend $1000+. Most of what’s out there are xpipes.


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[nitrojunk]

just swapped out my older KOOKs LTH's and mid section with high flow cats.. I swapped for ARH's. Anyway after removing, I looked into the mid pipe and driver side had no cats left and passenger only had 1/4 of the cat left inside.

 

[HudsonFalcon]

MRT Catted H-pipe here too. Nice growl to it with no rasp.

 

[PcChip]

Thanks for all the info. Unfortunately there are very few options for catted hpipes unless you want to spend $1000+. Most of what’s out there are xpipes.


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so what did you end up doing? I'm in the exact same situation as you right now