Long tube headers question
Thread Starter
Racer
Joined: Jan 2006
Posts: 394
Likes: 5
From: West Point Utah
Long tube headers question
Has anyone with long tubes, who kept there O2 sensors, had a problem with setting 0172 and 0175 codes ( too rich bank 1 and 2) Just wondering because I keep getting them. I think its because my front O2's have been moved back about 18" and they don't get hot enough and send signal to PCM to add fuel. Just asking Thanks Laurence 
Race Director
Joined: Jan 2007
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From: Norman Oklahoma - The Only State in the Union with no Blue Counties!
Instructor
Joined: Jan 2007
Posts: 116
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From: Howell Michigan
Has anyone with long tubes, who kept there O2 sensors, had a problem with setting 0172 and 0175 codes ( too rich bank 1 and 2) Just wondering because I keep getting them. I think its because my front O2's have been moved back about 18" and they don't get hot enough and send signal to PCM to add fuel. Just asking Thanks Laurence
Thread Starter
Racer
Joined: Jan 2006
Posts: 394
Likes: 5
From: West Point Utah
Sorry I didn't get to your posts sooner. The car has been tuned since header install. The car seems to run really rice at low speeds. I'm about to put heads and cam in it so will have the car tuned again and hopefully solve my problem because I have had it for about 7 months. Thanks again for the info. 
Thread Starter
Racer
Joined: Jan 2006
Posts: 394
Likes: 5
From: West Point Utah
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Melting Slicks
Joined: Mar 2004
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From: NCCO Oklahoma
The rear O2 sensors are equipped with higher rated heaters vs. the front O2 sensors. When you install a set of long tubes, you are moving the O2 farther back in the exhaust system, reducing the amount of heat that the O2 sensor has, and causing improper readings.
Moving the rear O2 to the front eliminates this issue... but if you need to continue to run all four O2 sensors, then just replace the front O2's with ones used for the rear, or use "Universal" O2's made by Bosch. ($53 each from Autozone, O'Reillys, etc...)
I just did the LG Motorsports (Street Series) and installed the universal O2's up front without a problem. (Except for the rear O2 codes, that is.)
Good luck.
Mark
Moving the rear O2 to the front eliminates this issue... but if you need to continue to run all four O2 sensors, then just replace the front O2's with ones used for the rear, or use "Universal" O2's made by Bosch. ($53 each from Autozone, O'Reillys, etc...)
I just did the LG Motorsports (Street Series) and installed the universal O2's up front without a problem. (Except for the rear O2 codes, that is.)
Good luck.
Mark
Thread Starter
Racer
Joined: Jan 2006
Posts: 394
Likes: 5
From: West Point Utah
The rear O2 sensors are equipped with higher rated heaters vs. the front O2 sensors. When you install a set of long tubes, you are moving the O2 farther back in the exhaust system, reducing the amount of heat that the O2 sensor has, and causing improper readings.
Moving the rear O2 to the front eliminates this issue... but if you need to continue to run all four O2 sensors, then just replace the front O2's with ones used for the rear, or use "Universal" O2's made by Bosch. ($53 each from Autozone, O'Reillys, etc...)
I just did the LG Motorsports (Street Series) and installed the universal O2's up front without a problem. (Except for the rear O2 codes, that is.)
Good luck.
Mark
Moving the rear O2 to the front eliminates this issue... but if you need to continue to run all four O2 sensors, then just replace the front O2's with ones used for the rear, or use "Universal" O2's made by Bosch. ($53 each from Autozone, O'Reillys, etc...)
I just did the LG Motorsports (Street Series) and installed the universal O2's up front without a problem. (Except for the rear O2 codes, that is.)
Good luck.
Mark