When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
On my two Evo 8's I just used O2 sensor extenders to eliminate CELs. It pulls the sensor out of the direct flow which makes it read ok. The same principle should be an option for anyone still getting CELs from headers.
When using the headers are you removing the primary catalytic converters all together?
Secondaries I have never had throw a code when removed but curious how the primary's are being removed if that's the case. The primary 02 sensors feed back to the ECU and should affect A/F's so how are the foolers getting around that? Are they acting as a voltage clamp at some point?
Damm Obiwan.....3 Supras and the F!!! I though I had my hands full!
I'm planning on Sikky headers with Borla exhaust as well. I don't want my car to be extremely loud. Hopefully someone here has numbers for that setup. I'm really interested in knowing how well the Borla system work.
Damm Obiwan.....3 Supras and the F!!! I though I had my hands full!
I'm planning on Sikky headers with Borla exhaust as well. I don't want my car to be extremely loud. Hopefully someone here has numbers for that setup. I'm really interested in knowing how well the Borla system work.
I have the Sikky/Borla combination and I love it! Details in the link below and the dynograph is in my signature.
On my two Evo 8's I just used O2 sensor extenders to eliminate CELs. It pulls the sensor out of the direct flow which makes it read ok. The same principle should be an option for anyone still getting CELs from headers.
This absolutely does not work on a ISF. Computer o2 simulator is the only way that light is going off.
On my two Evo 8's I just used O2 sensor extenders to eliminate CELs. It pulls the sensor out of the direct flow which makes it read ok. The same principle should be an option for anyone still getting CELs from headers.
Originally Posted by darbs242
This absolutely does not work on a ISF. Computer o2 simulator is the only way that light is going off.
I can confirm darbs answer. I used the extenders on mine. They worked for about 6 months, then I got the CEL. Then installed the o2 sim, and all has been well.