i remember seeing a vid of sx7r doing like 155 with the older model. i'm looking for things to spice up my interior. also, what all does it do?

it is very accurate because it is tapped into your ECU. The new one does some many things that I cant even list them all. Just go to the Apexi site and read up on it.

thanks, do u have one?

It's only accurate if the exact size of your tires is known to the RSM. Different rolling stock will have a different number of revs per mile and give different results.

Stereodude

Enter the correction factor. Revs will be correct no matter what you do (if you enter the correct signal number), but speed might be slightly off.

you have one don't you kev? do you like it? what all do you use it for?