Filled my Truck with some corn gas
04-16-2008, 11:24 PM
#14
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The stock fuel system and calibration cannot even come close to delivering enough fuel under any condition on that Tahoe.
Sounds good though KB, 100+ octain would be pretty nice to have all the time.
Sounds good though KB, 100+ octain would be pretty nice to have all the time.
04-16-2008, 11:50 PM
#17
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So the wideband is reading O2 content in the exhaust and running that through an equation to get you an AFR reading. Right now is it reading the same O2 content as it normally sees with gas?
04-17-2008, 01:45 AM
#19
A wide band doesn't read afr, it reads Lambda or completeness of combustion of the fuel though the amount of O2 in the exhaust. 1 is stoich (complete combustion), less then 1 is lean and more then 1 is rich and it then that is converted to 14.7 for gas or it would be 11 for the current mix of gas and ethanol I am running now. And yes It's still reading 14.7 for Lambda since setup for strait gas.
04-17-2008, 09:39 AM
#20
Did you notice the exhaust smell difference. It smells weird. I'm not sure I like it lol.
On a side note we are running E85 in a 500cc twin motor for our senior capstone. We are using megasquirt to control the motor and using a GM flex fuel sensor to allow the motor to be fully flex fuel. Its actually kinda neat. Ok the point of this was to say at wot at 9000rpms we are running about 44 deg of timing and the motor loves it. I was amazed how much timing E85 can take
We also haven't reprogrammed the WB to translate the AFR to e85 terms, but its easier for me to grasp lean or rich since its displays gas AFR
On a side note we are running E85 in a 500cc twin motor for our senior capstone. We are using megasquirt to control the motor and using a GM flex fuel sensor to allow the motor to be fully flex fuel. Its actually kinda neat. Ok the point of this was to say at wot at 9000rpms we are running about 44 deg of timing and the motor loves it. I was amazed how much timing E85 can take
We also haven't reprogrammed the WB to translate the AFR to e85 terms, but its easier for me to grasp lean or rich since its displays gas AFR