Billdog350
07-02-2004, 09:12 AM
Bought and installed a Sigma Sport 800 bike computer on my z400 the other day. The manual shows you how to calibrate the unit for your tire size. Other computers don't read above about 60 mph but the sigmas read up to 180mph+ (street bike riders use them). My z400 pulled exactly 67.0 mph on some abandoned railroad beds near my house....which is exactly what the LTZ400 calculator says I should be doing with my 41 tooth rear sprocket and 20" tires. I backed it up with GPS so I know its pretty accurate. Unit cost $25 shipped to my door. If anyone wants to know how to install the unit or where to get it, I can fill you in. I use my speedometer for testing peak performance. If I know I can hit X speed on a wide open area and I rejet it or change something and it goes faster or slower...it tells me right away how the motor is running.