I finally got my new chain and sprockets(only took me 3 days to find a place that had the rivet tool I needed)...but was wondering I went with the -1/+2 how much is the speedo off? b/c when It says I am going 85 on the Interstate it hardly feels like I am going 70mph.

 

Check out this site, it has a set up for the F4.

http://gearingcommander.com/

 

about 10 mph or atleast thats what mine is.

 

I went down 1 in the front and mine was always off by at LEAST 5 mph. I would assume since +2 is supposedly the equivalent to -1 in the front then you are probably cose to 10 off. I put in a speedohealer this week and i like it much better, plus the top speed recall is awesome

 

sweet, thats a great link