Wideband O2 Sensor location advise
OMG! Thanks.... I didn't think of that.
The instructions state that the sensor needs to mounted 18" past the collector (I should have mentioned that earlier). In my case that is where the x-pipe starts.... so I thought it would be best mounted just after the x-pipe.... after both pipes have merged and exhaust gases have collected together.
Sounds like I'm a little over concerned.
What is the ideal afr at idle? My Dodge ram stays right on 14.7 most of the time but however it is EFI.
Also what about cruise?
By doing some research it seems everyone has different afrs in mind on the subject.
The reason they say to put the sensor right after the collector is because they want it in the high exhaust heat area of the pipe.
I went by the pipe discoloration and it did happen to be right after the collector connection.
Putting it in the upper half of the pipe helps to insure condensation and such doesn't contaminate the sensor.
Idle A/F ratio's are kind of a personal preference IMO depending on what kind of idle you want.
I run mine on the lean side because I like the way the cam sounds there. 15.5-16.5 at idle.
Cruise AFR is up around the same area, and then comes down around 12-12.5 at higher loads and RPM's.
I also run lots of timing, so my cruise advance runs up into the low 50's but drops back to about 32 at WOT.
Don't know if you have seen it yet or not, but they also want the engine and exhaust run up to temp and then the sensor removed to fresh air and recalibrated before you can really trust what the reading is.
Kind of a break in period for the sensor itself.
