Ideal AFR with e85 at WOT? What is too lean?
#1
Rennlist Member
Thread Starter
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I think I have finally gotten rid of all my boost leaks and I was seeing 12.0-1 AFR'S at WOT tonight.
What do you guys consider as being too lean?
I know that E85 cools the intake charge more and therefore itīs more knock resistant and can handle more boost and it also makes the engine run cooler.
Thank you
What do you guys consider as being too lean?
I know that E85 cools the intake charge more and therefore itīs more knock resistant and can handle more boost and it also makes the engine run cooler.
Thank you
#3
Rennlist Member
Thread Starter
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So back to my original question... What is the ideal AFR at WOT running E85 and what is too lean?
#4
Race Car
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I shoot for 11.7-12.0.
I try to be around 12.5 up to peak torque, fattening uo right before Tgen leaning out after 5500 rpms.
I've picked up to over 130 mph leaning out the top end to 12.2
So, it's not a simple answer, but anything over 12.5 when in boost, I'd consider too lean. However, I have made a full pass at 12.6 without hurting anthing.
I try to be around 12.5 up to peak torque, fattening uo right before Tgen leaning out after 5500 rpms.
I've picked up to over 130 mph leaning out the top end to 12.2
So, it's not a simple answer, but anything over 12.5 when in boost, I'd consider too lean. However, I have made a full pass at 12.6 without hurting anthing.
#5
Rennlist Member
Thread Starter
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I shoot for 11.7-12.0.
I try to be around 12.5 up to peak torque, fattening uo right before Tgen leaning out after 5500 rpms.
I've picked up to over 130 mph leaning out the top end to 12.2
So, it's not a simple answer, but anything over 12.5 when in boost, I'd consider too lean. However, I have made a full pass at 12.6 without hurting anthing.
I try to be around 12.5 up to peak torque, fattening uo right before Tgen leaning out after 5500 rpms.
I've picked up to over 130 mph leaning out the top end to 12.2
So, it's not a simple answer, but anything over 12.5 when in boost, I'd consider too lean. However, I have made a full pass at 12.6 without hurting anthing.
Sid,
Thank you for responding.
I greatly appreciate and value your opinion!
#6
Race Car
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To add to this in case you've missed it in the past, I run a lean burn tune to her decent mileage under light load. I try to run around 17-18:1and a little over 40* timing for highway driving.