I'm using these values for the gear ratios under the custom car definition

http://www.sportcompactcarweb.com/ro..._ix/index.html

What other settings should I change to make this as accurate as possible? There are multiple settings, like the graph smoothing factor, dyno correction factor, and the drive wheel dimensions...

Help would be appreciated!!

btw, I assume I can't just use the EVO VIII 5-speed as the car's definition right?

Thanks