X fuel = 1:1 afr?
What is X???
Is there a way to mathmaticly remove or add fuel? I know there is no perfict math but anything to get my closer as randomly pulling fuel the drving the car is not working. example: i'm at 10.234ms of fuel at 3000rmp 180kpa and seeing 9.8:1 and need to be at 11.5:1. 555cc injectors. |
Calibrate your IAT sensor settings like I told you or you're going to do this every time you drive the car when the weather drops 5*f.
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weight.
12.5:1 means that for every kg of air, 0.08 kg of fuel is mixed in and vaporized. |
Originally Posted by hustler
(Post 770483)
Calibrate your IAT sensor settings like I told you or you're going to do this every time you drive the car when the weather drops 5*f.
Not discressing or ignoring your advice, i spent a few hours Sat looking into it.
Originally Posted by Braineack
(Post 770484)
weight.
12.5:1 means that for every kg of air, 0.08 kg of fuel is mixed in and vaporized. |
I didn't know you did that, it was a long weekend.
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Originally Posted by hustler
(Post 770501)
I didn't know you did that, it was a long weekend.
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close enough way:
DAFR: desired AFR AFR: measured AFR PW: pulsewidth NPW: new pulsewidth change in fuel multiplier ~= (AFR-DAFR)/AFR (will be negative if you need to remove fuel) you multiply this by your PW to get the amount to ADD to the PW. so if you want to get from 9.8 to 11.5.... (9.8-11.5)/9.8 = -.173 NPW = PW + PW*(-.173) or in your case: NPW = 10.234 + 10.234*(-.173) NPW = 8.464 ms for the Adaptronic, you have a VE table. Just replace NPW and PW with NVE and VE. |
Originally Posted by y8s
(Post 770539)
close enough way:
DAFR: desired AFR AFR: measured AFR PW: pulsewidth NPW: new pulsewidth change in fuel multiplier ~= (AFR-DAFR)/AFR (will be negative if you need to remove fuel) you multiply this by your PW to get the amount to ADD to the PW. so if you want to get from 9.8 to 11.5.... (9.8-11.5)/9.8 = -.173 NPW = PW + PW*(-.173) or in your case: NPW = 10.234 + 10.234*(-.173) NPW = 8.464 ms for the Adaptronic, you have a VE table. Just replace NPW and PW with NVE and VE. |
The just select the 3-6k columns and execute the math function on those columns. The math function would be to multiply by .85 to reduce fuel 15%
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practically speaking, yes you can subtract from 1 (or 100%) and use that value and the "multiply cells by" function in the fuel map.
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Thread is void. enrich and go open loop was at 24%, removed that and added some fuel back and gtg
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Yay jizzm
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