Okay, this is a case of me being a dumb @@$.
I tried 3 silvercans in my car this evening, all seemed about the same. Granted they are all used, and from different years, etc. But just trying to see if I could find anything.
I decided to check everything from the controller to the ESC. Um, embarrassed but found that my throttle forward end point was set to 60%. I cranked it up to 120% and the power came back, -amazing, much faster and where I expect performance to be. I have been racing with this setting for the entire season!!!! All my other car profiles are correct, somehow this one profile got messed up. The only upside was that I've been able to focus on my line and every other aspect of tuning my car.
Can't believe I did this! But problem seems to be solved, I should now be able to compete at the next race!