Since it's against federal emissions laws to move cats from the stock location, why would anyone spend the extra money on a catted y pipe to go with LT headers? I would assume any area that requires emissions testing would not pass a car with cats in a location other than a stock location, or are there areas that do?

 

your right and the cats dont work right when there moved they dont get hot enough.

 

Probably so they don't have to smell as much exhaust fumes. Also a lot of places don't care as long as there's cats on the car.

 

I was wondering this myself

 

noise maybe?

 

1 to cut down on fumes
2 to take some rasp out
3 to pass a visual

Some places are not as strict as the feds would like them to be. I live in one of those up your *** in your business nanny states but I havent really seen any place around here being very strict. I have a feeling thing WILL tighten up soon though.

Some of us around here have a catted y pipe just in case for visual inspection. Now, my catted y pipe might just be gutted

 

Catted Y pipes sound better than ORY pipes. Easier to pass inspection.

 

Given that good high flow cats only cost a few hp on non-crazy builds, I don't see why anyone would buy catless Y pipes. Cats kill the smell and tame the exhaust rasp and help with tone. It's basically a win-win for under $100 difference over catless pipes.

 

1. The smell of a non-catted car is not pleasant
2. You have a 95% chance of the car sounding like *** with a non-catted y-pipe on an F-body.

I ran over the axle duals for years without cats, and it was cool at first, but it got old after a while. The car could be heard from miles away, and I hated smelling like gas after getting done driving it.

 

Honestly, I got them because i was afraid of rasp. Read several threads before I bought my LT+ Catted Y, and a bunch of people were complaining about rasp. Little unknown noises annoy me more than anything, so I didn't want to take the chance...

 

Get true duals if you are afraid of rasp. problem solved

 

My lm1 had no rasp with catted y. Now .. Not so much

 

I wanted catted y actually. I was talked out of it said it would hang to low. I also am in CT also. I called j and m motorsports and he does inspection. Stay away from him by the way. He said they check the temperature of the cats. I think he does but dont believe most shops would do this but what do I know. There is a fake cats they sell. i might just get those installed. I have almost 2 years to go so not to worried but that will come up quick. The smell is terrible. My 4 year old said to me the other day daddy why does it smell like gas. Dont cart him in this car much.

 

Been there done that and **** him.

 

on my old car I had a dyno there. No **** I thought he was trying to blow it up . I dont even look at his shop when I drive by as im afraid something will happen to my car lol. I drive down that street everyday as Im in manchester

 

Do a search on here and you will find MANY complaints. I paid for 3 pulls and he gave me 1. Wouldnt even cut me a deal. He told me my car was running way to lean so he didnt wanna blow it up. Told me he could charge me a few hundred to fix it then haha. Ended up taking my car to another tuner and it wasnt lean at all. It was just the factory tune. The guy is a hack con artist **** him

 

I know I just called him for hahas to get a gauge on what the header install was. I was talking about an ory and and to pass emisions. He wanted to charge me like 2k lol and some **** about flattening the headers. Complete hack. he then said how he could put a 160 degree theromastat and change the coolant if I wanted. I would of walked out of there with 4 broken header bolts and a 4k bill