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Go Back   E46Fanatics > Tuning & Tech > Driveline, Engine & DME Tuning

Driveline, Engine & DME Tuning
Talk about driveline improvements, NA tuning and DME tuning your E46 BMW here. This includes diffs, intakes, exhausts, chips, software and OBD tuning.

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Old 09-07-2014, 01:40 PM   #1
robot
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MS43 lambda map

As I know MS41 has lambda map for AFR.

But I cant find this map in MS43. I found IP_TI_FL map, its theoretical injection via full load. But injection is not requested AFR, its injectors opening time. Right?

So front O2 will try to make AFR = 14.7 and I will get only fuel trims. Thats why I think its better to request AFR via lambda map... that I cant find.
Would be great to know the name of the map
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Old 09-07-2014, 02:49 PM   #2
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there is no lambda target map in MS42/43, it just oscillates around lambda 1 under every load condition except cold-start and full-load.
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Old 09-07-2014, 02:58 PM   #3
robot
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Quote:
Originally Posted by daniel_f. View Post
there is no lambda target map in MS42/43, it just oscillates around lambda 1 under every load condition except cold-start and full-load.
Ok, Thanks. Actually all I need is full load lambda. Please give me a hint what map is used for full load AFR? ip_ti_fl?
Also I found injection via TPS, the map is next to ip_ti_fl. Now I'm not sure I need change it...
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Old 09-07-2014, 04:00 PM   #4
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IP_Ti_FL__n (fulload correction based on rpm) is used to correct IP_Tib__n__Maf (basic injection)
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Old 09-07-2014, 04:15 PM   #5
robot
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Quote:
Originally Posted by daniel_f. View Post
IP_Ti_FL__n (fulload correction based on rpm) is used to correct IP_Tib__n__Maf (basic injection)
And is there any chance to make AFR richer than stock on full load?
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Old 09-07-2014, 04:46 PM   #6
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Well, Ti is calculation from Tib multiplied by (1+FL-Correction) and highest value for FL is 0.5

You have to check if its possible raise the value or if you are at the limit right now.
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Old 09-07-2014, 05:40 PM   #7
robot
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Well, Ti is calculation from Tib multiplied by (1+FL-Correction) and highest value for FL is 0.5

You have to check if its possible raise the value or if you are at the limit right now.
Thank you very much! I got it.
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