tuning for camshaft??
07-22-2011, 01:25 PM
#16
On the gas pumps they may say 10% ethanol or they may not.
100% Gas has a Stoich of 14.68 or 14.7 if you round up. E10 has a Stoich of 14.1
On the Flex Fuel truck that come in the shop the Stoich is 14.0 and the data displays 10% E. Now is it 14.7? I would think that the Tech II would round up.
If you have your truck at 14.7 and you have E10 it is like setting you stoich to 15.23
A truck on E0 and stoich set at 15.23 runs poorly.
Monitor you O2 voltage. What is the minimum that you see?
Then set your stoich to 14.1 -- Then what is the minimum voltage?
If you have tuned foe E0 and you have E10 you may need to start over or change a few tables, but the pay off is worth it. Just set your stoich to 14.1 and drive it and tell me it isn't worth it
100% Gas has a Stoich of 14.68 or 14.7 if you round up. E10 has a Stoich of 14.1
On the Flex Fuel truck that come in the shop the Stoich is 14.0 and the data displays 10% E. Now is it 14.7? I would think that the Tech II would round up.
If you have your truck at 14.7 and you have E10 it is like setting you stoich to 15.23
A truck on E0 and stoich set at 15.23 runs poorly.
Monitor you O2 voltage. What is the minimum that you see?
Then set your stoich to 14.1 -- Then what is the minimum voltage?
If you have tuned foe E0 and you have E10 you may need to start over or change a few tables, but the pay off is worth it. Just set your stoich to 14.1 and drive it and tell me it isn't worth it
07-22-2011, 01:31 PM
#17
On the gas pumps they may say 10% ethanol or they may not.
100% Gas has a Stoich of 14.68 or 14.7 if you round up. E10 has a Stoich of 14.1
On the Flex Fuel truck that come in the shop the Stoich is 14.0 and the data displays 10% E. Now is it 14.7? I would think that the Tech II would round up.
If you have your truck at 14.7 and you have E10 it is like setting you stoich to 15.23
A truck on E0 and stoich set at 15.23 runs poorly.
Monitor you O2 voltage. What is the minimum that you see?
Then set your stoich to 14.1 -- Then what is the minimum voltage?
If you have tuned foe E0 and you have E10 you may need to start over or change a few tables, but the pay off is worth it. Just set your stoich to 14.1 and drive it and tell me it isn't worth it
100% Gas has a Stoich of 14.68 or 14.7 if you round up. E10 has a Stoich of 14.1
On the Flex Fuel truck that come in the shop the Stoich is 14.0 and the data displays 10% E. Now is it 14.7? I would think that the Tech II would round up.
If you have your truck at 14.7 and you have E10 it is like setting you stoich to 15.23
A truck on E0 and stoich set at 15.23 runs poorly.
Monitor you O2 voltage. What is the minimum that you see?
Then set your stoich to 14.1 -- Then what is the minimum voltage?
If you have tuned foe E0 and you have E10 you may need to start over or change a few tables, but the pay off is worth it. Just set your stoich to 14.1 and drive it and tell me it isn't worth it
07-22-2011, 01:55 PM
#18
On the gas pumps they may say 10% ethanol or they may not.
100% Gas has a Stoich of 14.68 or 14.7 if you round up. E10 has a Stoich of 14.1
On the Flex Fuel truck that come in the shop the Stoich is 14.0 and the data displays 10% E. Now is it 14.7? I would think that the Tech II would round up.
If you have your truck at 14.7 and you have E10 it is like setting you stoich to 15.23
A truck on E0 and stoich set at 15.23 runs poorly.
Monitor you O2 voltage. What is the minimum that you see?
Then set your stoich to 14.1 -- Then what is the minimum voltage?
If you have tuned foe E0 and you have E10 you may need to start over or change a few tables, but the pay off is worth it. Just set your stoich to 14.1 and drive it and tell me it isn't worth it
100% Gas has a Stoich of 14.68 or 14.7 if you round up. E10 has a Stoich of 14.1
On the Flex Fuel truck that come in the shop the Stoich is 14.0 and the data displays 10% E. Now is it 14.7? I would think that the Tech II would round up.
If you have your truck at 14.7 and you have E10 it is like setting you stoich to 15.23
A truck on E0 and stoich set at 15.23 runs poorly.
Monitor you O2 voltage. What is the minimum that you see?
Then set your stoich to 14.1 -- Then what is the minimum voltage?
If you have tuned foe E0 and you have E10 you may need to start over or change a few tables, but the pay off is worth it. Just set your stoich to 14.1 and drive it and tell me it isn't worth it
you agree????
07-22-2011, 03:19 PM
#19
If he is using a wideband to tune, which i would assume he is, why would he need to retune everything? wideband tuning is all about the difference between actual afr and commanded.... To my knowledge the wide does not care if commanded is 12.0 or 15.5.... the whole E10 issue comes up when and if he goes back into closed loop, this is where the stioch value and switchpoint values will come into to play.
you agree????
you agree????
A wide-band is a Lambda gauge and a Lambda sensor.
Lambda = 1.0
Lambda = Stoich
The Wide-Band will display Lambda of 1.0 and AFR of 14.7 because the gauge is programmed that way. If you have E10 and Lambda for E10 is 1.0 the gauge will read AFR of 14.7 even if you have the AFR of 14.1
You shouldn't use the AFR part of a wide-band gauge just use lambda.
Have I confused you yet?
If the Wide-Band was used to dial in the MAF xfer then it will need to be corrected after the Stoich is set to 14.1 because this is Lambda. I take a fuel sample of every car before I dyno it. You have to or you will be chasing your tail.
Ever heard of 2 identical cars taking 2 different tunes? Or not every car takes the same tune? How much do you think that the fuel plays into that?
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