MSefi.com read only forum (Jan.15,2018)

I am setting up a single cylinder engine that will be running with alpha N tuning.
I am useing MS II v 2.862 on a Version 3 board.
The engine is a Rotax 650 cc in a BMW bike.
I have been having troubles setting up a 6-1 trigger to use the original flywheel so I will cut my own triggers and probaly use a single trigger at 60 BTDC.
In Megatune I have set alpha N for the tuning but the bins default to MAP.
When I go into the VE tuning it confirms that it is looking for a MAP signal not TPS.
I could not find anything in the INI file to change the bins, How is this done?

Under the "Tables" menu is "Alpha-n MAP table". Set this up and then the bouncing ball in the tuning screen should follow tps and not MAP. This will confirm that fuel is delivered by tps and not by MAP. The Alpha-n MAP table substitutes tps for map, but MT will still show the legend "MAP" where it should be tps, but if the bouncing ball moves with tps then all is OK. Test it on the stim to confirm.

Ian.

Thank You,
I had not seen that.

I just set up that map but it seems to only refer to the 5x5 map under extra tuning for blended Alpha N. It had no affect on the main Ve map or AFR and timing.

I just had a look at MT set up with the 2.850 code, the 5 x 5 table needs to be set up with 0 to 100% TPS equalling 0 to 100 kPa MAP figures. It's just a table for translating TPS into MAP. Maybe something changed. You shouldn't have to run a blend, but if you do, make sure the blend is 100% alpha-n. You have set up the MT configurator for alpha-n too? I'm not running this code but I did some bench testing a while back on MS2 and got it to work solidly.

Ian.

I did not get it to function properly and changed over to the extra code. It is straight forward and works fine there.