Need advice on my 2003
Thread Starter
Drifting
Joined: Feb 2005
Posts: 1,585
Likes: 5
From: Arlington TX
Need advice on my 2003
I'm thinking of adding ceramic 3" LT's w/X-pipe. My shop guys says I don't need the cats, that the lube guys never look under the car. What do you think? Any suggestions on a high-flow exhaust systems? I was also thinking of an axle back bolt-on job from Magnaflow that I could do my self and maybe keep the factory cats?
Thanks,
Scott
Thanks,
Scott
Safety Car
Joined: Jul 2004
Posts: 3,904
Likes: 29
From: Vancouver Washington
Without the cats the car's exhaust really stinks. I mean bad.
I put on the Dynomax LTs with their high flow cats and X pipe after having the whole thing ceramic coated. Couldn't be happier with fit, finish, and performance. I run a Borla cat back, but that's on the track car. I run a Magnaflow on the DD and the sound is just right for that.
I put on the Dynomax LTs with their high flow cats and X pipe after having the whole thing ceramic coated. Couldn't be happier with fit, finish, and performance. I run a Borla cat back, but that's on the track car. I run a Magnaflow on the DD and the sound is just right for that.
Drifting
Joined: May 2005
Posts: 1,590
Likes: 1
From: Littleton Colorado
Its not easy to keep the factory cats with most LT systems, not a whole lot of room under there. The term cat-back is kind of miss-leading on a Vette, the cats are up front before the cross over, and the LT collectors usually take up a lot of the room where the stock cats sit. Depending on which system you get you could with work re-use them, but it may be more work than its worth. But, I could not tell you what kits would lend themselfs to keeping the cats, just that some claim they have re-used them. I would suggest getting High flow cats with the system you choose. Keep the cats/H pipe or sell it.
FYI, you will either need to cut the stock cat-back, have a lifit, or jack the rear up very high to get them out. Its not a bad job, except for the lifting part.
FYI, you will either need to cut the stock cat-back, have a lifit, or jack the rear up very high to get them out. Its not a bad job, except for the lifting part.
Team Owner
Joined: Sep 2007
Posts: 21,915
Likes: 61
From: Miami Beach FL
Race Director
Joined: May 2005
Posts: 15,960
Likes: 21
From: West Norriton PA
St. Jude Donor '08
I'm thinking of adding ceramic 3" LT's w/X-pipe. My shop guys says I don't need the cats, that the lube guys never look under the car. What do you think? Any suggestions on a high-flow exhaust systems? I was also thinking of an axle back bolt-on job from Magnaflow that I could do my self and maybe keep the factory cats?
Thanks,
Scott
Thanks,
Scott
All header systems offer cats for their road systems. If you're only going to track the car then you can use a cat less system.
