Fab Speed Tune? - New Headers + CEL
03-27-2022, 12:20 PM
#16
Rennlist Member
Those SoCal spacers might work - might be worth a try. I took a chance with mine and got lucky.
On tuning, I had researched it - only a bit - and I think it was softronic that said they could essentially suppress the reporting of the code to the dash panel, but that the code would still be present in the car's computer, and would still show up on an OBD2 emissions check. If people are expecting a tune to 'eliminate' the codes, make sure to ask for details.
On tuning, I had researched it - only a bit - and I think it was softronic that said they could essentially suppress the reporting of the code to the dash panel, but that the code would still be present in the car's computer, and would still show up on an OBD2 emissions check. If people are expecting a tune to 'eliminate' the codes, make sure to ask for details.
03-27-2022, 12:32 PM
#17
Instructor
Thread Starter
Those SoCal spacers might work - might be worth a try. I took a chance with mine and got lucky.
On tuning, I had researched it - only a bit - and I think it was softronic that said they could essentially suppress the reporting of the code to the dash panel, but that the code would still be present in the car's computer, and would still show up on an OBD2 emissions check. If people are expecting a tune to 'eliminate' the codes, make sure to ask for details.
On tuning, I had researched it - only a bit - and I think it was softronic that said they could essentially suppress the reporting of the code to the dash panel, but that the code would still be present in the car's computer, and would still show up on an OBD2 emissions check. If people are expecting a tune to 'eliminate' the codes, make sure to ask for details.
03-27-2022, 07:25 PM
#18
Rennlist Member
I went the spacer route before getting a tune. The spacers did not help but no CELs since my GIAC tune. YMMV.
Those SoCal spacers might work - might be worth a try. I took a chance with mine and got lucky.
On tuning, I had researched it - only a bit - and I think it was softronic that said they could essentially suppress the reporting of the code to the dash panel, but that the code would still be present in the car's computer, and would still show up on an OBD2 emissions check. If people are expecting a tune to 'eliminate' the codes, make sure to ask for details.
On tuning, I had researched it - only a bit - and I think it was softronic that said they could essentially suppress the reporting of the code to the dash panel, but that the code would still be present in the car's computer, and would still show up on an OBD2 emissions check. If people are expecting a tune to 'eliminate' the codes, make sure to ask for details.
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RABjr (03-28-2022)
03-27-2022, 08:26 PM
#19
Rennlist Member
I'm not sure about 'spacers' and I don't know much about all this - other than those things pictured worked for me. Those that I bought are called "mini-cats" and my understanding was that the O2 sensor grabs a tiny sample of exhaust, analyses it, and determines if there's a problem. There' a reading pre- and post-cat and the cat should remove the CO2 or to perform whatever emissions duty it's supposed to do. So these mini cats sit between the small sampler 'bung' and the O2 sensor. They only need to perform cat converter duty on the sample of exhaust gas - and they do - so that when the sample gets to the O2 sensor, it's 'clean'. It's possible that spacers also have some way to produce the same effect - to clean up the sample. ?? Not sure if that helps...
03-27-2022, 09:20 PM
#20
Racer
The spacers move the O2 just far enough to bring it back in range so it won't throw a code.
No one will clear those codes or alter anything that involves emissions. In the last year the EPA has been hammering tuning shops. Look up Lund Racing. They came in guns drawn and raided the place in an overwhelming show of force. The worst part was Lund wasn't even in violation of any laws but because they are one of the big guys they got raided.
No one will clear those codes or alter anything that involves emissions. In the last year the EPA has been hammering tuning shops. Look up Lund Racing. They came in guns drawn and raided the place in an overwhelming show of force. The worst part was Lund wasn't even in violation of any laws but because they are one of the big guys they got raided.
03-27-2022, 09:28 PM
#21
Nordschleife Master
From their website... https://socalraceparts.com/products/...gine-light-fix
WHY ARE THESE NEEDED?
Normally the secondary oxygen sensors are the ones that cause the check engine light to come on. These are positioned after the catalytic converters and read the exhaust gas after it is filtered and heat is reduced through the catalytic converters
When making modifications (for off-road vehicles) usually the catalytic converters are removed. In some vehicles, This is the primary reason the check engine light comes on. This happens due to the fact that the secondary oxygen sensors are placed in the direct path of the exhaust gas providing a higher heat reading. Running a vehicle while Leaving the light on will cause the computer to constantly try to make fuel adjustments in turn making the vehicle run rough and waste a huge amount of fuel.
These spacers remove the oxygen sensors from the direct path and replicate the conditions they would normally face when the catalytic converter was in place fixing the issue and getting a smooth ride.
WHY ARE THESE NEEDED?
Normally the secondary oxygen sensors are the ones that cause the check engine light to come on. These are positioned after the catalytic converters and read the exhaust gas after it is filtered and heat is reduced through the catalytic converters
When making modifications (for off-road vehicles) usually the catalytic converters are removed. In some vehicles, This is the primary reason the check engine light comes on. This happens due to the fact that the secondary oxygen sensors are placed in the direct path of the exhaust gas providing a higher heat reading. Running a vehicle while Leaving the light on will cause the computer to constantly try to make fuel adjustments in turn making the vehicle run rough and waste a huge amount of fuel.
These spacers remove the oxygen sensors from the direct path and replicate the conditions they would normally face when the catalytic converter was in place fixing the issue and getting a smooth ride.
Last edited by FlatSix911; 03-27-2022 at 09:30 PM.
03-28-2022, 09:23 AM
#22
Rennlist Member
03-28-2022, 04:39 PM
#23
Instructor
Thread Starter
I'm not sure about 'spacers' and I don't know much about all this - other than those things pictured worked for me. Those that I bought are called "mini-cats" and my understanding was that the O2 sensor grabs a tiny sample of exhaust, analyses it, and determines if there's a problem. There' a reading pre- and post-cat and the cat should remove the CO2 or to perform whatever emissions duty it's supposed to do. So these mini cats sit between the small sampler 'bung' and the O2 sensor. They only need to perform cat converter duty on the sample of exhaust gas - and they do - so that when the sample gets to the O2 sensor, it's 'clean'. It's possible that spacers also have some way to produce the same effect - to clean up the sample. ?? Not sure if that helps...
The following users liked this post:
Jack667 (03-31-2022)
03-28-2022, 04:40 PM
#24
Instructor
Thread Starter
From their website... https://socalraceparts.com/products/...gine-light-fix
WHY ARE THESE NEEDED?
Normally the secondary oxygen sensors are the ones that cause the check engine light to come on. These are positioned after the catalytic converters and read the exhaust gas after it is filtered and heat is reduced through the catalytic converters
When making modifications (for off-road vehicles) usually the catalytic converters are removed. In some vehicles, This is the primary reason the check engine light comes on. This happens due to the fact that the secondary oxygen sensors are placed in the direct path of the exhaust gas providing a higher heat reading. Running a vehicle while Leaving the light on will cause the computer to constantly try to make fuel adjustments in turn making the vehicle run rough and waste a huge amount of fuel.
These spacers remove the oxygen sensors from the direct path and replicate the conditions they would normally face when the catalytic converter was in place fixing the issue and getting a smooth ride.
WHY ARE THESE NEEDED?
Normally the secondary oxygen sensors are the ones that cause the check engine light to come on. These are positioned after the catalytic converters and read the exhaust gas after it is filtered and heat is reduced through the catalytic converters
When making modifications (for off-road vehicles) usually the catalytic converters are removed. In some vehicles, This is the primary reason the check engine light comes on. This happens due to the fact that the secondary oxygen sensors are placed in the direct path of the exhaust gas providing a higher heat reading. Running a vehicle while Leaving the light on will cause the computer to constantly try to make fuel adjustments in turn making the vehicle run rough and waste a huge amount of fuel.
These spacers remove the oxygen sensors from the direct path and replicate the conditions they would normally face when the catalytic converter was in place fixing the issue and getting a smooth ride.
03-28-2022, 04:41 PM
#25
Instructor
Thread Starter
03-28-2022, 04:44 PM
#26
RL Community Team
Rennlist Member
Rennlist Member
O2 spacers pull the sensor sniffer a bit out of the stream making it less sensitive.
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RABjr (03-28-2022)
03-28-2022, 04:56 PM
#27
Instructor
Thread Starter
I just bought the socal spacers.
03-28-2022, 07:41 PM
#28
Rennlist Member
Have fabspeed catted headers and had a cell. The spacers worked for me.
I have since gone with a tune and eliminated the secondary O2 and some other things. If I replace the fabspeed headers at some point, will be going catless.
Emissions are only relevant for a street car. Keep that in mind as your talking to your tuners. They don't know if you have a daily driver or a dedicated track car. Your options open up if you have a "track car". Obviously your mileage will vary depending on your local inspection process.
I have since gone with a tune and eliminated the secondary O2 and some other things. If I replace the fabspeed headers at some point, will be going catless.
Emissions are only relevant for a street car. Keep that in mind as your talking to your tuners. They don't know if you have a daily driver or a dedicated track car. Your options open up if you have a "track car". Obviously your mileage will vary depending on your local inspection process.
Last edited by platinum997; 03-28-2022 at 07:43 PM.
03-29-2022, 04:53 PM
#29
Instructor
Thread Starter
Have fabspeed catted headers and had a cell. The spacers worked for me.
I have since gone with a tune and eliminated the secondary O2 and some other things. If I replace the fabspeed headers at some point, will be going catless.
Emissions are only relevant for a street car. Keep that in mind as your talking to your tuners. They don't know if you have a daily driver or a dedicated track car. Your options open up if you have a "track car". Obviously your mileage will vary depending on your local inspection process.
I have since gone with a tune and eliminated the secondary O2 and some other things. If I replace the fabspeed headers at some point, will be going catless.
Emissions are only relevant for a street car. Keep that in mind as your talking to your tuners. They don't know if you have a daily driver or a dedicated track car. Your options open up if you have a "track car". Obviously your mileage will vary depending on your local inspection process.