black.z51.c6

looking at buying lg street series not sure to go with cats or not. any input on sound, smell?, or anything you feel would be helpful in my decision would be appreciated. For the record i am not worried about inspection. Thanks guys

0Jeff @ TPE

Without question, go with Cats.
Cats only cost you 4-6hp (aftermarket metal matrix cats). It is nowhere near worth the down sides. Between the black soot on the fascia, and raw fuel smell, its not worth it. Plus, if you already have an aggressive exhaust it will get very very loud. Especially the drone.

COKANE1

You will be disappointed with the LG headers. I know everyone has their own opinion, but ARH and Kooks are the top header choices. Customer service with LG is horrible as well. They also changed their way of making the headers and it's not as good of material.
All that said, each vette is different and so is the owner so to each their own.
My setup: ARH 1-3/4 headers, 3" x pipe, no cats, B&B bullets. Very aggressive, very throaty, but the best overall parts and gains in power.
No cats you'll have some smoke at WOT, and it'll be louder, the smell of fuel will only be at WOT as well, but that's behind you so you won't notice it anyway....
At the end of the day it's whatever you want for what you do, and if emissions matters....

08LS3Vette

No cats gives you a more raw throaty race car sound. I've always preferred no cats on any sports car I've owned. But like said, it depends on your setup. My last 08 Vette I had LG Street Longtubes, X pipe, no cats, and an SLP Loudmouth 1 axle-back. It would wake the dead but I loved it. And as for the smell, it's not too noticeable. It never bothered me but then again it's the smell of performance lol

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

black.z51.c6

how much louder do you think a set up without cats, inch and 3/4 longtubes, with 2.5 x pipe will make my axle back borla s type 2's?

08LS3Vette

Going from the SLP LM1 axleback alone and then adding the LT's, X pipe, with no cats was night and day. The video doesn't do it any justice. See if you can find someone local on the forum with a similar setup so you can hear it in person. It definitely wakes the car up a ton that's for sure! lol

MikeyTX

And you can back up this statement ?

JW Motorsports

Cats for sure. Without smells terrible! That's just my experience with non catted and catted.

MikeyTX

Worse than this .........

Marc V.

Not worth removing the cats.

Only thing you gain is a horrible smell and possibly a huge fine.

FrankTank

Go with hi-flow cats for sure, I would agree with the rest. I did headers on my C5, and almost did no cats, but ended up getting them..and I was very glad I did, rode in a few cars without cats and smelled like crap, gave me a headache.

hdff

American racing headers & hi flow cats

black.z51.c6

thanks a lot fellas, convinced that cats are the way to go.

boraxman

Yes cats...For the children/

simplegto

Cat taste just like chicken.

Wayne O

I'm not familiar with the LGM street series headers. Kook's and American Racing headers are fine but for my money I'd want nothing less than the LG Pro long tube headers! They're cut for LGM by Borla and IMO they're the best headers going. I'd also recommend coating them. I went with the 2-stage cats as well.

CSIXX1

For what is worth I have a brand new set of LG Street Series headers with cats in my garage which will be installed on my 2011 GS A6. I talked to LG on which header to go with they told me if I have no plans on making over 500 RWHP then there LG Street Series is the way to go.

Adamliftrod

Got a 08 vett S/C with billy boat cat back exhaust. If I go
And buy, kooks,b$b, or Lg longtube headers, do I have to
Buy the pipe south of the x-pipe also, or can I use the one b&b
Sent me? Should i buy the1 7/8 headers?

Kadorja

Cats can be pretty quiet and sometimes will still throw codes if they are high flow cats. If you legally need them they can work but beware they may still throw out codes. If you run a boosted vehicle they can be a restriction and eventually blow out someday.

No cats is a definite increase in noise but like with all other applications it can be made to sound very good with the right exhaust. If you think your exhaust is almost a little too loud right now then with the headers and no cats it will be very loud. I never noticed a smell after driving without cats for a while. Even after not driving the car for months and getting back to driving her.




Regardless with the headers the exhaust tone will change and there's a chance you will have unwanted drone or other noise.

Boba Fett

my experience was a little different. for my c5z, i went with kooks headers/mid pipe (no cats) and corsa catback
i really didnt find the smell to be that bad at all and the sound was way better. in fact there really wasnt a smell at all unless there was hard exceleration and even then it wasnt any where near what the other guys say they experienced...
when i put headers on my c6z, they will be arh and uncatted...