LT Headers with no tune - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Stealth 2010 2SS/RS · 03-03-2010, 03:07 PM

has anyone done LT headers with no tune. would like to know it they make the check engine light come on, ie o2 problems. dont want to run a tune because it voids your warranty

Ghost of Vincent Price · 03-03-2010, 03:22 PM

Your car will be fine without a tune. Im not a tune worry wart though, I would tune it anyways.

Jer4251 · 03-03-2010, 03:33 PM

kooks with no tune. didnt throw a light til i put my CAI on. now i have a pretty engine outline light on the dash. If its something that most people dont have, then its worth a couple of extra ponys.

JANNETTYRACING · 03-03-2010, 03:37 PM

Quote:

Originally Posted by Stealth 2010 2SS/RS

has anyone done LT headers with no tune. would like to know it they make the check engine light come on, ie o2 problems. dont want to run a tune because it voids your warranty

All LT headers will Set Cat efficiency codes P0420 and P0430 without a tune.

Inferno2SSRS · 03-03-2010, 04:56 PM

Quote:

Originally Posted by JANNETTYRACING

All LT headers will Set Cat efficiency codes P0420 and P0430 without a tune.

From what I have heard SLP LT's with Cats won't throw codes without a tune, and if this is true the downfall to them are that they only add about 21HP and or only available in 1 3/4's. And for the price you can get any LT's with Cat's that will produce a lot more power.

JANNETTYRACING · 03-04-2010, 07:43 AM

Quote:

Originally Posted by Inferno2SSRS

From what I have heard SLP LT's with Cats won't throw codes without a tune, and if this is true the downfall to them are that they only add about 21HP and or only available in 1 3/4's. And for the price you can get any LT's with Cat's that will produce a lot more power.

I would have to see that for myself, and I am pretty sure it is just a rumor.

When Ever you move the cats further from the engine they take longer to get up to operating temps, it is that time period that sets the codes.

Ted.

Jason 98 TA · 03-04-2010, 11:16 AM

I absolutely agree the only way I see a long tube not set those codes is if the cats were not high flow. The TSP header system use a metal core high flow so they will set a cat code very quickly.

The good news is for a couple hundred bucks we offer mail order tuning for you specific mods. With that mail order tuning you get free retunes for the first year!!

Camaro X · 03-04-2010, 11:30 AM

I've got the SLP LT's Cats LM II muflers on my L99. They threw a code. I data logged with a Diablo Sport and made an adjustment to LTFT as they suggest and no more codes!

Stealth 2010 2SS/RS · 03-04-2010, 01:11 PM

if LT headers are going to pop o2 codes i think that i will run no cats and just tune the rear o2s out.

tony1 · 03-06-2010, 04:13 PM

Quote:

Originally Posted by Camaro X

I've got the SLP LT's Cats LM II muflers on my L99. They threw a code. I data logged with a Diablo Sport and made an adjustment to LTFT as they suggest and no more codes!

The SLP ZL575 (supercharged) that the dealers sell have SLP LT Headers and are CARB legal in all states.. With these and a tune would I be able to pass in Illinois .. all they do here is connect thier reader up to check the system errors,,???

AdamCzap · 03-07-2010, 01:19 AM

just installed my kooks LT's with high flo cats - no codes yet w/ factory cat-back on L99.

JANNETTYRACING · 03-08-2010, 07:44 AM

Quote:

Originally Posted by AdamCzap

just installed my kooks LT's with high flo cats - no codes yet w/ factory cat-back on L99.

Give it Time.

03-03-2010, 03:07 PM	#1
Stealth 2010 2SS/RS Drives: Black 2SS/RS M6 Join Date: Mar 2010 Location: Minnesota, Vadnais Heights Posts: 494 View My Garage	LT Headers with no tune has anyone done LT headers with no tune. would like to know it they make the check engine light come on, ie o2 problems. dont want to run a tune because it voids your warranty

03-03-2010, 03:33 PM	#3
Jer4251 Camaro Addict Drives: too many Join Date: Sep 2009 Location: 912 Posts: 1,274	kooks with no tune. didnt throw a light til i put my CAI on. now i have a pretty engine outline light on the dash. If its something that most people dont have, then its worth a couple of extra ponys. __________________ 1990 IROC-Z Vert LS 1996 SS Vert LT4 1992 Z28 Z03 T5 1992 Z28 Z03 L98 2018 Sierra Denali 6.2 1997 Z28 Z4C 1995 Z28

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03-03-2010, 03:22 PM	#2
Ghost of Vincent Price Banned Drives: 2010 Camaro Join Date: Jan 2010 Location: underground Posts: 374	Your car will be fine without a tune. Im not a tune worry wart though, I would tune it anyways.

03-04-2010, 11:16 AM	#7
Jason 98 TA Drives: Camaro Join Date: Apr 2009 Location: Texas Posts: 1,669	I absolutely agree the only way I see a long tube not set those codes is if the cats were not high flow. The TSP header system use a metal core high flow so they will set a cat code very quickly. The good news is for a couple hundred bucks we offer mail order tuning for you specific mods. With that mail order tuning you get free retunes for the first year!!

03-04-2010, 11:30 AM	#8
Camaro X Drives: 2012 Camaro ZL1 Join Date: Sep 2009 Location: Indy Posts: 144	I've got the SLP LT's Cats LM II muflers on my L99. They threw a code. I data logged with a Diablo Sport and made an adjustment to LTFT as they suggest and no more codes!

03-04-2010, 01:11 PM	#9
Stealth 2010 2SS/RS Drives: Black 2SS/RS M6 Join Date: Mar 2010 Location: Minnesota, Vadnais Heights Posts: 494 View My Garage	if LT headers are going to pop o2 codes i think that i will run no cats and just tune the rear o2s out.

03-07-2010, 01:19 AM	#11
AdamCzap Drives: 18 zl1, 17 sierra denali Join Date: Sep 2009 Location: Detroit Area Posts: 471	just installed my kooks LT's with high flo cats - no codes yet w/ factory cat-back on L99.