Ummm cheating, don't think I mentioned that. You think your speedo is cheating, maybe what I heard is correct.
Just saying what I have been told. The LRP 'trick' is a sequence of some sort you do to change settings on it. Obviously only LRP insiders would know this, unless its not true and just a romour.
Not worried about being beaten, infact the 4 GT12 meetings I've done I've TQ'ed and won all 4, even beaten your "cheat" speedos

all about corner speed with GT12
Not sure how they check speedos, but would the way they check them only check timing advance or will it do static timing. As that's what I have heard the hobby wing has over the core one
From MY experience the hobby wing speedos I've ran against have had higher top end than my core with roughly the same rollout/lipo ratings.