Target lambda with e-85 and LSA?
12-08-2012, 07:08 AM
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Target lambda with e-85 and LSA? New member here, coming over from the Mustang world.
I have an 09 CTS-V making 616rwhp on E-85 and was wondering what I should be considering a safe lambda/AFR? On a gas wideband, it's making right at 12.0:1, which from my understanding would convert to .82 lambda. Doing some research, I see people running anywhere from .73 (10.8 AFR) to .85 (12.5 AFR), depending on the forum/car model. With regular pump, it seems the consensus is usually right around 11.8 AFR's for pump gas and max power/safety. Why the inconsistency and lack of agreement with E-85?
We have no knock, but I do have the feeling that 12:1/.82 lambda is a bit on the lean side, at least from the poking around across the interwebz.
I have an 09 CTS-V making 616rwhp on E-85 and was wondering what I should be considering a safe lambda/AFR? On a gas wideband, it's making right at 12.0:1, which from my understanding would convert to .82 lambda. Doing some research, I see people running anywhere from .73 (10.8 AFR) to .85 (12.5 AFR), depending on the forum/car model. With regular pump, it seems the consensus is usually right around 11.8 AFR's for pump gas and max power/safety. Why the inconsistency and lack of agreement with E-85?
We have no knock, but I do have the feeling that 12:1/.82 lambda is a bit on the lean side, at least from the poking around across the interwebz.
