O2 Sensors on LS conversion with Hooker sidepipes
Thread Starter
Burning Brakes
Joined: Oct 2013
Posts: 1,216
Likes: 66
From: Killeen Texas
O2 Sensors on LS conversion with Hooker sidepipes
I'm getting ready to start the engine wiring on my LS conversion. When reading for the placement of the O2 Sensors They are recommended to being placed 18" from the Heads. The only way to do this is to mount the O2 on the primary tubes. The reason is to get the sensor to 600 deg for correct readings.
Has anyone tried to use heated O2 sensors? Placing them at the collector and what did you need to change on the tune?
If so what part # did you use and where did you place them.
I would like to here on all your thoughts on this.
Thanks
Tim
Has anyone tried to use heated O2 sensors? Placing them at the collector and what did you need to change on the tune?
If so what part # did you use and where did you place them.
I would like to here on all your thoughts on this.
Thanks
Tim
Thread Starter
Burning Brakes
Joined: Oct 2013
Posts: 1,216
Likes: 66
From: Killeen Texas
Team Owner
Joined: Feb 1999
Posts: 34,455
Likes: 665
From: Republic of Texas
I highly do NOT recommend putting the O2 sensor in a primary tube, if you do you are only reading that one cylinder. I have it in my collector and have zero issues.
Last edited by Corey_68; May 15, 2014 at 08:50 AM.
Race Director
Joined: Dec 1999
Posts: 19,610
Likes: 778
From: Forked River NJ
My car is at American Racing headers having the exhaust system made for it. They are putting the O2 sensors in the collectors as they do for all their systems. They even do it for all the new cars also. I do not have a picture of it yet. Even my old Gen1 fuel injected SB I put them in the collectors. Put them In The 3 or 9 o'clock position
Thread Starter
Burning Brakes
Joined: Oct 2013
Posts: 1,216
Likes: 66
From: Killeen Texas
Corey, I agree with not putting them in the Primary, but with the distance from the heads to the collectors on side pipes just wondering if the O2 sensors can reach the 600 deg required. If I would run the heated O2's would I get better results?
Race Director
Joined: Apr 2007
Posts: 11,152
Likes: 890
From: South Western Ontario
OK, I know 100% that the C5 and the 2005 C6 both use 4-wire heated O2 sensors. The 2005 sensor p/n also fits all other C6's so all the LS engines used heated O2 sensors. I've also never seen a 2-wire sensor before. GM started with a 1-wire sensor then switched to either 3-wire or 4-wire sensors. So, where did you get 2-wire O2 sensors and what engine management system is using them?
The stock 4-wire LS sensors will work fine in the collectors. You may want or need to increase the closed loop integrator time since it takes longer for the exhaust to reach the sensors when they are further down the tubes.
The stock 4-wire LS sensors will work fine in the collectors. You may want or need to increase the closed loop integrator time since it takes longer for the exhaust to reach the sensors when they are further down the tubes.
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Thread Starter
Burning Brakes
Joined: Oct 2013
Posts: 1,216
Likes: 66
From: Killeen Texas
OK, I know 100% that the C5 and the 2005 C6 both use 4-wire heated O2 sensors. The 2005 sensor p/n also fits all other C6's so all the LS engines used heated O2 sensors. I've also never seen a 2-wire sensor before. GM started with a 1-wire sensor then switched to either 3-wire or 4-wire sensors. So, where did you get 2-wire O2 sensors and what engine management system is using them?
The stock 4-wire LS sensors will work fine in the collectors. You may want or need to increase the closed loop integrator time since it takes longer for the exhaust to reach the sensors when they are further down the tubes.
The stock 4-wire LS sensors will work fine in the collectors. You may want or need to increase the closed loop integrator time since it takes longer for the exhaust to reach the sensors when they are further down the tubes.
Thanks Tim
Burning Brakes
Joined: Oct 2010
Posts: 1,192
Likes: 7
From: Wentzville MO
Exhaust Manifolds.
Didn't realize that hooker made LS conversion header/side pipes. I used stock C5 exhaust manifolds and the O2 bung is not 18" away. By the way these stock exhaust manifolds flow better than most headers. What ECU are you planning on using? That determines the type of O2 sensor you need to use, wide or narrow band. Need a little more info on your set up to help.
http://www.carcraft.com/techarticles...e_header_test/
http://www.carcraft.com/techarticles...e_header_test/
I'm getting ready to start the engine wiring on my LS conversion. When reading for the placement of the O2 Sensors They are recommended to being placed 18" from the Heads. The only way to do this is to mount the O2 on the primary tubes. The reason is to get the sensor to 600 deg for correct readings.
Has anyone tried to use heated O2 sensors? Placing them at the collector and what did you need to change on the tune?
If so what part # did you use and where did you place them.
I would like to here on all your thoughts on this.
Thanks
Tim
Has anyone tried to use heated O2 sensors? Placing them at the collector and what did you need to change on the tune?
If so what part # did you use and where did you place them.
I would like to here on all your thoughts on this.
Thanks
Tim
Last edited by donnie1956; May 17, 2014 at 08:15 PM.
Thread Starter
Burning Brakes
Joined: Oct 2013
Posts: 1,216
Likes: 66
From: Killeen Texas
Didn't realize that hooker made LS conversion header/side pipes. I used stock C5 exhaust manifolds and the O2 bung is not 18" away. By the way these stock exhaust manifolds flow better than most headers. What ECU are you planning on using? That determines the type of O2 sensor you need to use, wide or narrow band. Need a little more info on your set up to help.
http://www.carcraft.com/techarticles...e_header_test/
http://www.carcraft.com/techarticles...e_header_test/
I'm going with a 24x system, 9354896 ECM