M1000 with BD box keep dropping one cylinder

[Arctic Thunder]

I have my BD box on basically a bone stock 07 M1000. I have the fuel pressure set at 42psi (BMP regulator). I have the BD box setup to keep my EGT's in the 1150-1200 range through out the RPM range and at all throttle settings. This works well at 6000ft and up. When riding lower elevations at a steady throttle setting around 5400rpm in the low tps I will have the Mag cylinder drop out. I will see a good 400 deg difference in EGT temps. If I nail the throttle it will snap right up and pull hard. (Sometimes not but 90% of the time it will clean right up).

I am wondering if the ECU is compensating the fuel to the point that it is running rich and causing it to foul due to the lower elevations. I have copied my 6000ft fuel map and tried to adjust the fuel. I have to add a couple points to keep the temps below 1250 but then it wants to foul when I get out of it. Pulls hard, snap off the throttle and it will foul.

Any ideas. I plan to call BD tomorrow and talk about it but thought I would try the SW guys first.

Thanks

Thunder

 

[WyoBoy1000]

take some fuel away at the proper rpm on just the mag side, low setting, whats your temp when it drops

 

[Arctic Thunder]

take some fuel away at the proper rpm on just the mag side, low setting, whats your temp when it drops

To take fuel away I am sure I will need to adjust the trim on the box. I had the same thought. Just hadn't got to it yet.

As for temps. I would see 1050 on the PTO and 700 on the mag.

Thunder