Multiecuscan

Hi,
I've just tested this new 3.4 version on an alfa mito multiair 135hp marelli ecu.

I tested few parameters and i found that a couple are not correct.
Maximum RPM operation says: 0Km/h where it should be 6200 or around it.
Number of rewrites is 2 but the car is brand new...ok it would mean nothing.... just saying
Engine OIL temperature is 125C° where the real value is 60/61C°

Talking about this last one... i thought it could say that because the car doesn't have an oil temp. sensor?

Any explenation?

edit:
forgot this:

ECU ISO Code: 7A 07 86 08 64
ECU ISO Code: 7A 07 86 08 64
04/02/2012 16:37:53
CONNECTED TO:
ALFA MITO 1.4 TURBO 16V
Magneti Marelli IAW 8GMF CF5/EOBD Injection (1.4 16V)
--------------------------------------------------------------

ECU ISO code: 7A 07 86 08 64
FIAT drawing number: 51875958
Hardware number: MM8GMFHW502
Hardware version: 00
Software number: 1M10CA38
Software version: 0000
Homologation number: 8GMFA4
Functioning time (EEPROM): 35534
Operating time: 35534

Thanks for reporting this, but I double-checked those parameters and all data is correct.
So, the 2 parameters (Maximum RPM and Number of rewrites) are correct.
The Oil temperature is also correct, but it is not the actual oil temperature. This temperature is calculated by the control unit based on other sensor readings.

?
They can't be correct...

Why ECU should use a completely different value?
For OIL temp.; in my humble opinion, the only explanation is that car doesn't have the sensor and ecu consider its max limit.

Anyway, for sure rpm limiter cannot be correct because an engine can't have an rpm limiter at 0rpm...
I tested it on some cars and it's correct...
For example on mine it said 6500 stock, then it said 6700 after chip tuning and now it says 7000rpm with last mod....
The same thing with different cars..

Yani,

Engine oil temp reading is wrong.

Temperature after 4 hrs:
http://ipiv.slask.pl/punto2014/temp/2.jpg


Temp after 20 h:

http://ipiv.slask.pl/punto2014/temp/1.jpg


~40*C difference...

Multiair engine have oil temp sensor in UniAir module. Part No: 55217822

Reading is wrong or sensor is broken... I'll check it in other MA 135HP engine.