BMW Motronic 1.3 descriptors

by **sgrouwstra** » Sun Jan 25, 2015 9:12 pm

I'am quit new to this. Have found many maps, now try to figure out what they exactly do.

DME 0261200179 (M30B35) with software version 1267356460

I want to know all the descriptors, maby someone has a complete motronic 1.3 list. I found some, with help on the forums.

by **biela** » Tue Mar 31, 2015 4:39 pm

Hello

I have found a little:

3B RPM Factor:40
40 Load ms Factor:0,05
36 Volts Factor:0,068
37 IAT ºC Factor:0,75 Offset:-48
38 CTS ºC Factor:0,75 Offset:-48
Spark Factor:0,75 Offset:-22,5

by **sgrouwstra** » Sun Apr 19, 2015 11:26 am

Hi there,

Thanks for that, but now i'am trying to figure out applying it on the axis descriptor. For RPM (from motronic.ws) it goes like: substract the hex2dec value from 256, multiply by 40, and tha tis you max rpm for that map.
Does it work for temp. the same? I tried checking from other .xdf files, but no luck.

For example, a CTS idle map from a stock173 file: 38 04 4E 30 1C 62

256 - Hex2Dec(62) * 0,75 -48 = 70.5 ºC (this should be 85ºC, according to hakkentt xdf file)