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Discussion Starter #1
Where do you command your lambes in relation to load. Please include your fuel and elevation. Tell us why you set the afr there as well.
 

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My AFR reference table uses MAP and RPM. It's more difficult for me to describe AFR targets in relation to MAF load (I use a maf with megasquirt on this car) so I'll stick with MAP.

e85, sea level, 10:1 compression 306. I shoot for 12.7 at 100kpa (zero boost) and linearly transition to 11.6 by 5psi, then hold 11.6 from 5psi to 10psi.
 

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Discussion Starter #4
Let's say 80% up to 300% in increments of 10. I ask because I want to see where different combos and elevation other tune for. I have had a couple of people help me over the years and they have been lean on my combo's. They seen to work at sea level.

Just gathering info.
 

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21,855 Posts
9.608 9.608 11.438 11.438 11.666 12.009 12.353 11.094 11.094 10.523
10.294 10.294 11.666 11.666 12.009 12.353 12.581 11.323 11.209 10.523
11.094 11.094 12.353 12.353 12.696 13.153 12.924 11.781 11.209 10.637
11.666 12.696 13.039 13.153 13.611 13.611 13.954 14.640 14.640 14.068
12.467 13.153 13.153 13.153 13.611 13.954 13.954 14.640 14.640 14.068
12.924 13.039 13.039 13.153 13.268 13.496 13.496 14.297 14.297 13.496
16.127 16.127 15.555 15.212 15.098 14.983 14.640 14.640 14.640 13.954
16.356 16.356 16.127 15.784 15.212 14.983 14.640 13.954 13.954 13.954

rows: load 7.5-90%
columns: -30-240f

WOT multiplier

16384 0.945
6000 0.945
4400 0.953
3800 0.977
3200 0.945
2400 0.969
1600 0.906
0 1.000
 

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read wrong

rpm is not a factor

load

I agree its hard to read, that is a result of cut and paste, too lazy to type out by hand

why don't you download binary editor and scan it for yourself....?
 

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Discussion Starter #8
I have B.E.

I used the a9l2 from Mike. He was a lot of help and still is. I have since sold my stock eec due to 30 year old wiring issues. I now have a holley hp that is close.

Looking at your parameter settings I would guess you would be lean where I live. We tend to run a little richer at 5200' for max power.
 

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I have B.E.

I used the a9l2 from Mike. He was a lot of help and still is. I have since sold my stock eec due to 30 year old wiring issues. I now have a holley hp that is close.

Looking at your parameter settings I would guess you would be lean where I live. We tend to run a little richer at 5200' for max power.
that is the beauty of MAF

it calculates the actual air mass, and baro is taken care of that way
 

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9.608 9.608 11.438 11.438 11.666 12.009 12.353 11.094 11.094 10.523
10.294 10.294 11.666 11.666 12.009 12.353 12.581 11.323 11.209 10.523
11.094 11.094 12.353 12.353 12.696 13.153 12.924 11.781 11.209 10.637
11.666 12.696 13.039 13.153 13.611 13.611 13.954 14.640 14.640 14.068
12.467 13.153 13.153 13.153 13.611 13.954 13.954 14.640 14.640 14.068
12.924 13.039 13.039 13.153 13.268 13.496 13.496 14.297 14.297 13.496
16.127 16.127 15.555 15.212 15.098 14.983 14.640 14.640 14.640 13.954
16.356 16.356 16.127 15.784 15.212 14.983 14.640 13.954 13.954 13.954

rows: load 7.5-90%
columns: -30-240f

WOT multiplier

16384 0.945
6000 0.945
4400 0.953
3800 0.977
3200 0.945
2400 0.969
1600 0.906
0 1.000
Do you run that rich because the engine is boosted?
 

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Discussion Starter #15
a moment of silence for you high elevation boys.
I'm not busting balls here. I just want to know what your afr is at per combo and elevation. The sea level guys will run faster or make more power at their elevation. You an correct for elevation on the HP if you like. I call B.S. on the corrected numbers. We loose about 20% of the power here. This is what I come up with at the track not the corrected dyno numbers.

Who has ran at sea level and Bandimere and what changes did you make and how far apart were your ET's
 

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10.523 x .953 = 10.028. Am I missing something or does it fall on it's face.
my engine coolant never gets to 240, and if it does, then its protected

so you are not reading it properly range in columns

-30f to 240f from left to right

I highly doubt if I gave you ride in it, you wouldn't rip the holy sh%t handle off the door......
 

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Discussion Starter #17
Not likely on the ride unless you hit the ditch. I had a combo close to yours with a eaton m112. I'm sure it's fast. Could it be faster with more or less fuel, who knows. I didn't open up my BE to see where your load vs temp could be per row or column. A data log would be helpful.

My experience shows 11.2 on the upper end makes the most power. Any leaner it slows down same with richer. I also run north of 34 degrees of timing. This is a pump gas motor. When I sprayed meth I command lamda at 12.4 to get ans afr of 11.2 and 38 degree's of timing. No one I know at close to sea level runs that rich or that much timing. The combo was a 347 with 9.2 comp. tfs HP and a AFM b4 cam. Nothing out of the ordinary. Just 5240' altitude and corrected to 7500' plus on most occasions.



By he way I never pass up a free ride
 

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Discussion Starter #20
Of course free. You offered and I accept.

My last setup was a maf and an a9p. Not certain what the factory bap had to play in the fueling. I used Dechipa's apl2 strategy. No bap
 
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