[Rocket]

Hello,
I want to datalog MAF output 0-5v but I want to see meaninfull data values for example Kg/h not just Volts. The problem is that output is non linear but I have transfer function table from oem ecu. Is it any good way to do conversion? May be in megalogwiever?

[jonbill]

I've not done that myself, but it looks like MLV can do it.
https://www.efianalytics.com/MegaLogVie ... mulas.html
you could certainly do it in a spreadsheet (excel, google sheets), although it might get rather slow with a big log.

[JHolland]

Can you share the transfer function?

[Rocket]

I probablly said wrong, not transfer function table, but look up table, this table is from siemens ecu of siemens maf:
volts scaling factor 0.1, flow numbers are in kg/h. Not sure how to use it for tuner studio or megalog, to see actual value in log not just volts.

Code: Select all

0	,	0
2	,	0
4	,	0
6	,	0
8	,	18
10	,	22
12	,	27
14	,	31
16	,	36
18	,	40
20	,	45
21	,	49
23	,	54
25	,	58
27	,	63
29	,	67
31	,	73
33	,	76
35	,	79
37	,	82
39	,	85
41	,	88
43	,	91
45	,	95
47	,	98
49	,	102
51	,	105
53	,	109
55	,	113
57	,	117
59	,	121
61	,	125
63	,	129
64	,	133
66	,	137
68	,	142
70	,	146
72	,	151
74	,	156
76	,	161
78	,	166
80	,	171
82	,	176
84	,	181
86	,	186
88	,	192
90	,	198
92	,	203
94	,	209
96	,	215
98	,	221
100	,	227
102	,	233
104	,	240
105	,	247
107	,	253
109	,	260
111	,	267
113	,	275
115	,	282
117	,	290
119	,	297
121	,	305
123	,	313
125	,	322
127	,	331
129	,	339
131	,	348
133	,	358
135	,	367
137	,	377
139	,	387
141	,	397
143	,	407
145	,	418
146	,	428
148	,	439
150	,	450
152	,	461
154	,	472
156	,	483
158	,	495
160	,	506
162	,	518
164	,	529
166	,	541
168	,	553
170	,	565
172	,	577
174	,	589
176	,	601
178	,	614
180	,	626
182	,	639
184	,	652
186	,	665
188	,	679
189	,	692
191	,	706
193	,	720
195	,	735
197	,	749
199	,	764
201	,	779
203	,	795
205	,	811
207	,	826
209	,	843
211	,	860
213	,	877
215	,	894
217	,	912
219	,	930
221	,	949
223	,	968
225	,	987
227	,	1007
229	,	1027
230	,	1047
232	,	1068
234	,	1089
236	,	1110
238	,	1132
240	,	1154
242	,	1177
244	,	1200
246	,	1223
248	,	1246
250	,	1270
252	,	1295
254	,	1319
256	,	1345
258	,	1370
260	,	1396
262	,	1422
264	,	1449
266	,	1476
268	,	1503
270	,	1531
271	,	1559
273	,	1588
275	,	1617
277	,	1646
279	,	1676
281	,	1706
283	,	1736
285	,	1768
287	,	1799
289	,	1831
291	,	1863
293	,	1896
295	,	1930
297	,	1963
299	,	1998
301	,	2033
303	,	2068
305	,	2104
307	,	2140
309	,	2177
311	,	2214
313	,	2252
314	,	2290
316	,	2329
318	,	2369
320	,	2409
322	,	2450
324	,	2491
326	,	2533
328	,	2575
330	,	2618
332	,	2662
334	,	2706
336	,	2751
338	,	2797
340	,	2843
342	,	2891
344	,	2938
346	,	2987
348	,	3036
350	,	3086
352	,	3137
354	,	3188
355	,	3240
357	,	3293
359	,	3347
361	,	3402
363	,	3458
365	,	3514
367	,	3572
369	,	3630
371	,	3690
373	,	3750
375	,	3811
377	,	3874
379	,	3937
381	,	4002
383	,	4068
385	, 	4134
387	,	4202
389	,	4272
391	,	4342
393	,	4414
395	,	4487
396	,	4561
398	,	4637
400	,	4714
402	,	4793
404	,	4873
406	,	4955
408	,	5038
410	,	5123
412	,	5210
414	,	5298
416	,	5388
418	,	5481
420	,	5575
422	,	5671
424	,	5769
426	,	5870
428	,	5972
430	,	6077
432	,	6184
434	,	6293
436	,	6403
438	,	6515
439	,	6628
441	,	6742
443	,	6857
445	,	6973
447	,	7090
449	,	7208
451	,	7325
453	,	7443
455	,	7561
457	,	7679
459	,	7797
461	,	7915
463	,	8033
465	,	8151
467	,	8270
469	,	8389
471	,	8508
473	,	8627
475	,	8747
477	,	8868
479	,	8989
480	,	9111
482	,	9233
484	,	9356
486	,	9480
488	,	9605
490	,	9731
492	,	9857
494	,	9985
496	,	10114
498	,	10240

[jonbill]

A v long if then else statement might work.
See the inline function bit in the efianalytics page above.

calcVal = [RPM] > 1000 ? [RPM] : 0

[JHolland]

I think you can use the tablelookup function:
https://www.efianalytics.com/TunerStudi ... 0files.pdf

[Rocket]

Thanks for ideas, I will take a look.