Playback Tach 1/3 real time
 

Once I make a pass and I'm in he pits replaying run, the tach plays back 1/3 real time, is that faster or slower than real time and what's the math to convert to real time so I can get close with my timers for shifting on time. Autometer should do real time.

I was pm'ed the answer, apparently after reading the instructions 20 times I missed the part about holding the playback button to see real time!!!! Well I'm glad I wasn't too embarrassed to post the question.