Cat delete pipes w/stock headers
Instructor
Joined: Jun 2014
Posts: 114
Likes: 15
From: Spokane WA
Last edited by MarkRacerX; Nov 9, 2017 at 05:04 PM.
Pro
Joined: Oct 2017
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Race Director
Joined: Apr 2003
Posts: 17,700
Likes: 1,667
From: moraga ca
A car with headers should be tuned and there goes the warranty. A car with the cat deletes doesn't need a tune. If you look through the thread, there is a lot of welding and fabrication that goes into the cat deletes. I'm just an observer and have no dog in the fight.
Le Mans Master
Joined: Oct 2008
Posts: 8,891
Likes: 981
From: Whitby Ont.
if one is wanting to mod the car, do you think they are worried about warranty ? just sayin
Instructor
Joined: Jun 2014
Posts: 114
Likes: 15
From: Spokane WA
I think it being an easier swap option of cat deletes vs Headers in event you need to go to stock for those not doing pulley / having a tune, just looking at simple mods for good gains as they're said to be pretty good and not too spendy!
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Race Director
Joined: Jan 2014
Posts: 10,709
Likes: 7,101
From: Fulshear, TX
AFE has a pretty good Black Friday deal on their cat pipes.
https://afepower.com/afe-power-48-34...nnection-pipes
Catless for $599, HFC for $879.
https://afepower.com/afe-power-48-34...nnection-pipes
Catless for $599, HFC for $879.
Melting Slicks
Joined: Aug 2014
Posts: 2,746
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One with headers would gain the best performance if tuned, but there are a couple header options that will allow you to install them without needing to tune out a CEL.
Moderator emeritus
Joined: Jun 2001
Posts: 18,599
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From: Jacksonville Florida BWO Dayton, Cincinnati, Bloomsbury NJ, Cincinnati
2015 C7 of the Year Finalist
AFAIK the only headers you can install w/o a tune are shorties. If you drop all 4 CATs, you will drop a code. If you tune out the CAT codes, your warranty is hosed with the ECM tune.
You can delete the rear CATs w/o a tune and not toss a code as they are not monitored like the front ones are.
In the future, after my extended warranty is done, I will consider LTs, no CATs and a tune. ONLY when I quit the warranty path.
Elmer
You can delete the rear CATs w/o a tune and not toss a code as they are not monitored like the front ones are.
In the future, after my extended warranty is done, I will consider LTs, no CATs and a tune. ONLY when I quit the warranty path.
Elmer
Melting Slicks
Joined: Aug 2014
Posts: 2,746
Likes: 916
AFAIK the only headers you can install w/o a tune are shorties. If you drop all 4 CATs, you will drop a code. If you tune out the CAT codes, your warranty is hosed with the ECM tune.
You can delete the rear CATs w/o a tune and not toss a code as they are not monitored like the front ones are.
In the future, after my extended warranty is done, I will consider LTs, no CATs and a tune. ONLY when I quit the warranty path.
Elmer
You can delete the rear CATs w/o a tune and not toss a code as they are not monitored like the front ones are.
In the future, after my extended warranty is done, I will consider LTs, no CATs and a tune. ONLY when I quit the warranty path.
Elmer
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Joined: Jun 2001
Posts: 18,599
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From: Jacksonville Florida BWO Dayton, Cincinnati, Bloomsbury NJ, Cincinnati
2015 C7 of the Year Finalist
Elmer - I've had great success with the Kooks 1 7/8" LTs + Kooks Green cats + Kooks x-pipe with NPP mufflers. I have no CEL and I have not tuned it. I'll eventually tune it when out of warranty, but for now, I'm leaving it as is because I primarily just wanted louder/more aggressive exhaust. This is the only mod to my car. I know of a couple other guys on here who did get a CEL with this setup, but they were also running aftermarket cold air intakes/air filters. My air intake is still totally stock right down to the original air filter.
Buy a lottery ticket! You're walking on water!
I've never seen LTs not toss a code, maybe because I don't keep CATs when I do LTs.Elmer
Melting Slicks
Joined: Aug 2014
Posts: 2,746
Likes: 916
That's the key with mine. The intent of the green cats is to prevent a CEL yet still perform well. I'd go catless, but hate all the exhaust fumes that you get with it.