Slp Headers - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Steve RS/SS · 07-05-2013, 07:57 AM

I just purchased SLP long tube 1 3/4 headers with high flow cats and was just trying to clear something up. Some people have said they did not get a CEL and other said they did. Is a tune required or can you drive the car with a CEL with no issues and is there anything else that has to be done because of the header install? I appreciate the input. WIth all this computer stuff on these cars I want to make sure I do this the right way.

HorsemenLC-SS · 07-05-2013, 08:05 AM

Hit and miss. The rear o2 sensors tell the pcm that the cats are working or not working. With high flows you still might get the light. I think they say the only high flows that wont throw the cel are the green high flows from kooks. Other than that you'll have to tune em out. And you can run your car with that cel on itll probably use more fuel tho.

mikeyg36 · 07-05-2013, 08:54 AM

You can run the car as long as you want without the tune. The rear o2s do not change the performance of the car, they just check to make sure that the cats are working.

RJT-SS · 07-05-2013, 08:56 AM

Quote:

Originally Posted by HorsemenLC-SS

Hit and miss. The rear o2 sensors tell the pcm that the cats are working or not working. With high flows you still might get the light. I think they say the only high flows that wont throw the cel are the green high flows from kooks. Other than that you'll have to tune em out. And you can run your car with that cel on itll probably use more fuel tho.

^^^^This....and it won't hurt running this way. Most end up getting a tune anyway though because they don't want to keep looking at the CEL and want to get the most out of the header install.

Dynamite · 07-05-2013, 11:31 AM

Quote:

Originally Posted by RJT-SS

^^^^This....and it won't hurt running this way. Most end up getting a tune anyway though because they don't want to keep looking at the CEL and want to get the most out of the header install.

Yep that's right.

Steve RS/SS · 07-05-2013, 04:03 PM

thanks guys I appreciate the responses. It put my mind at ease.

BlaqWhole · 07-05-2013, 04:12 PM

I wouldn't dare do any modification that would cause a CEL without the necessary ECU tuning. Regardless of what the CEL is, I'd say get it tuned. Because the CEL could be trying to alert you to some other problem that you may not be aware of. You spent hundreds of dollars on the headers, spend another couple hundred and get it tuned correctly.

RJT-SS · 07-05-2013, 06:33 PM

^^^^^Good point.

96MrBass · 07-05-2013, 08:54 PM

I have a full SLP exhaust installed and after the tune it was a totally different car.
I am still have a cel with no problems its just a pain seeing it.

kc ss/rs · 07-05-2013, 09:56 PM

performance gains are advertised on their website with vehicle untuned.

axis · 07-05-2013, 10:38 PM

Quote:

Originally Posted by 96MrBass

I have a full SLP exhaust installed and after the tune it was a totally different car.
I am still have a cel with no problems its just a pain seeing it.

Was the RPM tune suppose to include the LT's? If so, you need to get back with them about that. They should have turned the rear O2 sensors off with the tune. Are you sure it's the cat efficiency codes?

Steve RS/SS · 07-06-2013, 07:24 AM

point taken...

Steve RS/SS · 07-06-2013, 08:14 AM

If I decide to do the tune is the handheld tuners I see advertised the best way to go? I would only be looking to turn off the CEL.. I dont run the car at the track or abuse it.

JANNETTYRACING · 07-06-2013, 09:52 AM

Quote:

Originally Posted by Steve RS/SS

If I decide to do the tune is the handheld tuners I see advertised the best way to go? I would only be looking to turn off the CEL.. I dont run the car at the track or abuse it.

I can Help

07-05-2013, 07:57 AM	#1
Steve RS/SS Drives: 2010 2SS/RS Join Date: Jul 2010 Location: New Jersey Posts: 324 View My Garage	Slp Headers I just purchased SLP long tube 1 3/4 headers with high flow cats and was just trying to clear something up. Some people have said they did not get a CEL and other said they did. Is a tune required or can you drive the car with a CEL with no issues and is there anything else that has to be done because of the header install? I appreciate the input. WIth all this computer stuff on these cars I want to make sure I do this the right way. __________________

07-05-2013, 04:03 PM	#6
Steve RS/SS Drives: 2010 2SS/RS Join Date: Jul 2010 Location: New Jersey Posts: 324 View My Garage	thanks guys I appreciate the responses. It put my mind at ease. __________________

07-05-2013, 06:33 PM	#8
RJT-SS Drives: '11 2SS/RS A6 Join Date: Apr 2011 Location: New Orleans Posts: 504	^^^^^Good point. __________________ Performance Mods: Kooks 1-7/8 LTs; Calico coated w/HFCs, Solo Mach XL catback w/J-pipes, VMax TB, C.A.I. Intake, JRE Tune, RX Catch-Can

07-05-2013, 08:54 PM	#9
96MrBass Drives: GM Join Date: Sep 2010 Location: Marydel, DE Posts: 1,321	I have a full SLP exhaust installed and after the tune it was a totally different car. I am still have a cel with no problems its just a pain seeing it. __________________ Roto- Fab Cai, SLP 1 3/4" headers, 3"X pipe, LM2 cat back, Comp Cam & AI Heads, SLP UP, RPM Tuned, GPI Intake, Vmax TB, ADM Air Scoop, 3.91 Gears, Gforce driveshaft, Braille 21#, Elite Catch Can, Pfadt Tie Rods, Diff Bushings and Trailing arms, Eibach spings & sways, BMR cradle bushings, Nt555r's.

07-06-2013, 07:24 AM	#12
Steve RS/SS Drives: 2010 2SS/RS Join Date: Jul 2010 Location: New Jersey Posts: 324 View My Garage	point taken... __________________

07-05-2013, 08:05 AM	#2
HorsemenLC-SS Drives: 2010 Camaro SS, 2005 CTS-V Join Date: Mar 2013 Location: Las Cruces Posts: 51 View My Garage	Hit and miss. The rear o2 sensors tell the pcm that the cats are working or not working. With high flows you still might get the light. I think they say the only high flows that wont throw the cel are the green high flows from kooks. Other than that you'll have to tune em out. And you can run your car with that cel on itll probably use more fuel tho.

07-05-2013, 08:54 AM	#3
mikeyg36 Drives: 2015 Z/28 #533 Join Date: Jul 2012 Location: NY Posts: 6,731	You can run the car as long as you want without the tune. The rear o2s do not change the performance of the car, they just check to make sure that the cats are working.

07-05-2013, 04:12 PM	#7
BlaqWhole Account Suspended Drives: 2017 Camaro ZL1 A10 Join Date: May 2012 Location: NJ Posts: 7,692	I wouldn't dare do any modification that would cause a CEL without the necessary ECU tuning. Regardless of what the CEL is, I'd say get it tuned. Because the CEL could be trying to alert you to some other problem that you may not be aware of. You spent hundreds of dollars on the headers, spend another couple hundred and get it tuned correctly.

07-05-2013, 09:56 PM	#10
kc ss/rs Drives: 2010 ss/rs Join Date: Jun 2013 Location: kansas city missouri Posts: 247	performance gains are advertised on their website with vehicle untuned.

07-06-2013, 08:14 AM	#13
Steve RS/SS Drives: 2010 2SS/RS Join Date: Jul 2010 Location: New Jersey Posts: 324 View My Garage	If I decide to do the tune is the handheld tuners I see advertised the best way to go? I would only be looking to turn off the CEL.. I dont run the car at the track or abuse it. __________________