[drgibson]

Ok I have a question, What influences the ratio of RPMs to speed?

Here's the Deal looking back on a post I made right after “M” was broke in and what her speed was for specific gears and at specific RPMs. Here’s a quote.

Originally Posted by drgibson

Performance:

Here is what I can tell you Red Line is 6,000rpms. That being said;

First gear top speed 45mph

Second gear top speed 64mph

Third gear top speed 82mph

Forth gear top speed I may never know

Fifth gear top speed I’ve heard is about 128mph but I have no intention of finding out.

3,000rpms in fifth gear is 65mph

3,500rpms in fifth gear is 75mph

For control purposes we’ll use 75 mph in 5th.

After changing Pipes, adding the Air kit, and TFI controller the RPMs at 75 mph was right 4,000. Well when I removed the TFI controller a couple weeks ago I noticed that the RPMs at 75 mph had dropped back to 3,500.
(But wait there’s more)
After summerizing “M” which consisted of removing the windshield they dropped yet again, 3,300 = 75 mph. Now I can understand the TFI affecting the RPMs but the windshield?!
[FONT='Verdana','sans-serif']If anything I’d have thought that they would have gone up, ya know more wind resistance.[/font]