New F4
#11
04-12-2007 | 07:49 AM
Senior Member
Joined: Jul 2006
Posts: 1,127
Likes: 1
From: NS, Canada
RE: New F4
This is how you can work out the ammount of extra speedometer error from stock your current sprockets are:
16:45 being stock is a ratio of 0.3555
15:50 being -1,+2 is a ratio of 0.3
Divide your ratio by the stock ratio
0.3 divided by 0.3555 = 0.843763
The -1,+5 ratio is therefore about 84% of stock.
This means that at 65 mph indicated you'd actually be travelling about 55.
16:45 being stock is a ratio of 0.3555
15:50 being -1,+2 is a ratio of 0.3
Divide your ratio by the stock ratio
0.3 divided by 0.3555 = 0.843763
The -1,+5 ratio is therefore about 84% of stock.
This means that at 65 mph indicated you'd actually be travelling about 55.