Much appreciated, but I dont think it's correct, at least for an 06. At idle the truck sits at 101-102. Under normal to hard acceleration it jumps up to about 114, then at WOT it instantly goes to 100 and stays there until you let off the throttle a bit. I'm guessing theres no realy way to tell the AFR without a dedicated sensor or a sniffer. If anyone else knows something, let me knowthis form of representation of air fuel ratio is called lambda. its turning the af into a % by using 14.7 as the denominator of a fraction and the current af ratio as the numberator. if your running at 14.2 to 1 then the computer looks at it as 14.2/14.7=0.966 or 96.6%. so basically what you can do to get the af ratio in the way you want is take whatever percentage it shows you and multiply that by 14.7. example if it is showing you a percentage of 85% you would multiply .85 by 14.7 and get 12.495 to 1 is your af ratio. if the percentage its showing is 102% then multiply 1.02 by 14.7 and you get 14.994 to 1. hope this is helpfull to ya
oh and your correct most naturally aspirated motors run their best at 12.5:1 to 3.1:1 or .85 - .901 (85%-90.1%)
they probably use a different number for their base like say 12.5 or whatever the motor is most efficient at then lean and rich would be relative to its optimum ratio which would make sense if only 08 and up have wide band. if you can find a nice spot to get a voltage reading here is the voltage conversion that the titans use i'm sure its most likely the same for usMuch appreciated, but I dont think it's correct, at least for an 06. At idle the truck sits at 101-102. Under normal to hard acceleration it jumps up to about 114, then at WOT it instantly goes to 100 and stays there until you let off the throttle a bit. I'm guessing theres no realy way to tell the AFR without a dedicated sensor or a sniffer. If anyone else knows something, let me know
have you ever used this feature, if so does it read as a percentage or an actual ratio? if ratio what ratios have you seenmy bullydog reads real time A/F R's
actual ratio'shave you ever used this feature, if so does it read as a percentage or an actual ratio? if ratio what ratios have you seen
Whats the reasoning of all this research?Well since it's still up in the air, I'm going to do some data logging tomorrow while I'm at work using the 02 sensor voltage graph that was posted up. I was told by two members at titan talk this is how you have to do it unless you have an AFR guage or using cipher. I'm planning on monitoring RPM, B1 and B2 sensor voltage, timing. Anything else I should be looking at or will that pretty much cover it? I also want to do another log with the 2 degree advance taken off to see if the timing will hit the same max, or if the truck pulls anything off on the top end.
Huge thirst for knowledge pretty much sums it up.Whats the reasoning of all this research?
