There is a manufacturer out there with both a 125 & 250 smoker that was developed many years back that had all sorts of trick stuff and at a certain gnarly track in the middle of Un Zud the 125 was blowing away the 250Fs of the day quite easily and the 250 smoker made the 450 compressor look decidedly slow.
I didn't get a close look at the 125 plant, but the 250 was 4 point injection with 2 spark plugs. Injection and ignition were fully programmable independently from a laptop and only took seconds to achieve. There was also the ability to adjust the power valve if I remember correctly.
There was some other trickery they played around with such as air forks & shocks but they were just separate testing. Interestingly enough the frames were perimeter steel & not alloy.
