You're not getting much help are you...

I did a test on the way home today. It was around 8 sec according to the cd player clock, I'm sure there'* some give and take in that. Probably take more off than add on, it'* hard to concentrate on driving, speedo, and timer at the same time. Someday I'll find my stopwatch and put a new battery in it and get a friend to ride with.
Hope that gives you some clue.