No cats? or keep them?

[Styre]

How much power is gained by adding a offroad x pipe or doing long tube headers? I was thinking the main gain is from losing the cats. has anyone done a before and after dyno? I'm wanting to add an o/r x pipe but not sure if it's worth taking the cats off. Oh if I take the cats off and tune it, will the engine light be on? Thanks, Steve

 

[Judaspriess]

If you take the cats out, you can have your tuner shut off the rear O2 sensors and not have to worry about the check engine light.

I have JBA LT's and H-pipe with and with out cats, it wasn't but a few HP 1-3hp difference but without the cats the exhaust is louder and has a raspy sound to it.

 

[1lowtoy]

What is SC state inspection like these days. As the emission standards seem to be different in every state, I can only go by what we deal with in GA. I would make sure you keep converters on the car, long tubes or shortys. Convertors are not near as restrictive on the new cars as they used to be. Although, I don't really like them in any turbo application.

 

[96blowncobra]

sc doesnt have any "emission" testing so that shouldnt be an issue

 

[1lowtoy]

Lucky bastards!

 

[stangzilla]

do LT's and o/r mid pipe. you'll gain some power, engine will be more efficient, and sound better. since you dont have inspections, its a win / win. if you dont need the cats, i dont see any reason for keeping them.

 

[NastyStang113]

Roughly about 3-5 rwhp with a offroad x pipe on my car when it was N/A.

 

[Error404]

you'll probbaly notice a stronger smell without the cats too. If that bothers you or not.

 

[dragpac]

on my car I could notice a diff. from 3rd on.

 

[RedMosesSC]

NO cats will be LOUD!! If your car is driven frequently or on long highway cruises it may get to you.

I swapped out my Midpipe for a Maganflow Catted X, the high flow cats are far less restrictive than the OEM cats and youll gain a couple horses but you wont really feel that much on the butt dyno. Sounds great too!

http://www.youtube.com/watch?v=QNLVxp5EvTQ

 

[Styre]

Thanks guys, I have slp loud mouth so I guess not having cats will be to loud. Is there a differnce in power by going to an x pipe with cats?

 

[flaming70vw]

I have an offroad H-pipe. It is loud but only when accelerating when just cruising it is pretty quiet. My 94 5.0 with cats and flowmasters drones like a mother on the freeway but not the new car.

 

[redstangs9308gt]

Dude unless your hard of hearing there is no way I would have your mufflers without cats. I had flowmaster 10s, then flowmaster 44s, then pypes mid mufflers all without cats. Way too loud for ME. I ended up with the magnaflows (not the magnapaks) and without cats the car is just a hair louder than it was with cats and factory mufflers. My 2cents. Oh yeah I did notice my car picks up rpm quicker without my cats. So its really just a matter of personal preferences.

 

[GIG4FUN]

kooks, offroad x, Roush cat back & muffs
been loving it

try it without


rock on

 

[NastyStang113]

Dude unless your hard of hearing there is no way I would have your mufflers without cats. I had flowmaster 10s, then flowmaster 44s, then pypes mid mufflers all without cats. Way too loud for ME. I ended up with the magnaflows (not the magnapaks) and without cats the car is just a hair louder than it was with cats and factory mufflers. My 2cents. Oh yeah I did notice my car picks up rpm quicker without my cats. So its really just a matter of personal preferences.

Are you saying that your car is only a hair louder than it was with the factory exhaust? I've got the same exhaust set-up. O/R X pipe and Magnaflow catback, it is certainly a lot louder than stock! I actually switched from a mid muffler Magnapack system with the offroad x pipe because it was too loud too.

 

[Styre]

Im going to do the o/r x pipe and loudmouths if it's to loud I 'll get some mufflers. what's better a x or h pipe?

 

[NastyStang113]

Im going to do the o/r x pipe and loudmouths if it's to loud I 'll get some mufflers. what's better a x or h pipe?

I'd advise against it. It's going to sound horrible.

 

[pieperz06]

Im going to do the o/r x pipe and loudmouths if it's to loud I 'll get some mufflers. what's better a x or h pipe?

x will theoretically give you more power but i think it sounds to raspy for me

h is almost as good for power and i think it sounds way better listen to clips on youtube and you can decide for your self

also brenspeed sells the pipes pretty cheap i would never want to go back to the stock exhaust after having an o/r pipe

i defantiy felt some more power in the but dyno but no actual numbers on the gains

 

[Styre]

cool, I think I will find some mufflers and chek out youtube clips. Thanks

 

[BLKS197]

Love my O/R pipes, just don't love the NYS inspection process that I have to get around to get it inspected.