NB miata (bp4w) cam sync issue after V3 migration

V3 SOFTWARE
22

NB scope looks good.

What I would do now:

  1. change primary trigger edge to falling

  2. change CAM 1 edge to falling

  3. Set igntion mode to: seqentional instead wasted spark

23

Btw: Update to 36-2 trigger is great improvement of this ignition trigger. The more tooth the more precise is the spark (less dependent of angular acceleration of the crankshaft).

24

scope_202658_180.emubscp3 (592 Bytes)

Okay, so I tested with falling edge trigger on crank/cam + sequential ignition. Sorry I forgot to enable ‘take skipped edges’ this time…

Had to adjust the base timing with the timing light using a different first trigger tooth / angle setting.

Car didn’t want to start up, it was trying to fire but sounded like it was working against itself.

Any other ideas based on this info?

25

I see the problem now.

The rpm are uneven and the cam decoder doesnt work properly (N+1).

Try the following settings on the CAM:

image
image427×218 7.74 KB

26

Im going to switch back to v3 this weekend and try this. Should primary trigger still be set to falling edge with this secondary trigger setting?

27

I haven’t had the chance to try, did this work?