Here's a video I recorded trying to put it through its paces. You can see the inability to accelerate in level flight. I cycled cooling doors to verify. Also tried different super charger settings. I can get it up to higher speeds by diving but once level, or after bleeding speed by maneuvering it doesn't recover well. And WEP seems to have 0 effect. Light eventually comes on but I never notice any increase or decrease in power. I didn't use it at all in this video. I can't say for sure there's something wrong, but the airplane feels really anemic at mill power and the figures in the early-access manual included with the module implies much higher speeds (I understand CAS vs IAS as well, it doesn't account for the difference).
/shrug
I'm giving up troubleshooting it and will fly around it, but definitely feels underpowered at mil power and WEP seems ineffictive.