You sure there's no upgrades? I've been trying and trying, getting really smooth laps that get me very low 1.23 but no chance of lower. As a test I put the diff on and roll bars which made no difference to pi and I was getting mid 1.22 with a good lap (kept it dirty so it wouldn't count). Just saying, I can see low 23 being possible I just cant get my head round sub 22 lol. You need to train us if its all legit! .
Ps, upgrades have been taken off mine again.