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View Full Version : e39 528i MS41.0 tuning



antonijs
11th December, 2011, 10:21 PM
Im trying to tune my e39 528i with MS41 ECU.
I tried to set ignition timing to 4 degrees earlier, but it's no use, the car runs worse, with higher consupmtion.
But there was no detonation and i run on only RON 98 gasoline.
What i have to change, so the car would be a little more economical and to improve engine smoothness in idle.
Reduce injection duration and advance ignition?
Or what else?
I would be very thankful for some advices.
I'll add the ori file and my unsuccessful mod file:

antonijs
12th December, 2011, 05:03 PM
oh come on...
can anyone even give me something to read and learn from?
i just can't find any resources where would be exlained how to achieve something(more power or less fuel consumption or smth else), by changing maps in ecu. :confused: