MembersPage/FPhil/CoilTypeOddFireConfig (2011-05-16 18:10:31)

Ignition parameters for odd fire coil type configuration.

I do not know on which crank tooth Firmware 1.1.90 start counting.

As I understand, the Marelli microplex logic for starting the ignition is:

On CamTooth 1 START COUNT Crank teeth
On CamTooth 2 If CrankCount=2 then START IGNITION, (next cyl. is c2 90° from here

Question

Lets note the 6 tuples of 2 crank teeth which are seen by the VR sensor during a double revolution of 720 ° by the following:

/t01/.30°./t02/ .. 90°.. /t03/.30°./t04/ .. 90°.. /t05/.30°./t06/ 90°

/t11/.30°./t12/ .. 90°.. /t13/30°/t14/ .. 90°.. /t15/.30°./t16/ 90°

Indeed cylinder numbering is not useful at this bench test stage. Although things are more involved we just want to exercise the VemsTune capabilities as a first attempt and observe with a scope what's coming out.

So lets us ask Genboard to fire 10° before the following teeth

/t01/ ..... 150° .... /t04/ .. 90°.. /t05/ ..... 150° ....

/t12/ .. 90°.. /t13/ ..... 150° .... /t16/ .. 90°..

What are the options to set from the MegaTune ignition menu? I have searched a while, but I must say it is not that simple. Help from Genbooard experts appreciated ;)!!