i have been out today with my SP13.5 v3 and did a lap time of 18.3
then i took it out put the 10.5 version in re-geared the car and turned all the turbo,timing off and did a 18.6 !!!!!
go figure !!!!
we have 2 stock classes
1, timable speedos and 13.5
2, non timable speedos and 10.5
i am as quick with the 10.5 as i am with the 13.5 with turbo and timing
should have bought an EZrun and 10.5
only kidding i love the tekin really