Finding an Objective Performance Measure

[tom.gabriele]

~ I have tried searching, but I couldn't come up with any search terms that brought up what I am looking for ~

I am looking for some sort of objective performance measure, so I can tell for sure what difference different mods make. I don't want to pay for anything like a trip on a dyno, nor do I need quite that level of precision. I don't think there is any safe way to time myself on a 0-60 run, and I don't really have any other ideas.

Obviously, there is the "seat of the pants" feeling for when it's running lean, rich, tight, etc., but for some things, it's just hard to tell.

Any ideas for how to measure performance objectively, easily and for free? Or is it really that the seat of the pants that makes the difference, so that's all I should worry about?

[RossLH]

Numbers are just numbers. When it comes to sitting on a <400lb machine, you'll be able to feel every little difference. Ultimately that's all that matters.

However, if you really are worried about numbers, download a free dyno app on your phone and attach the phone to your handlebars. Assuming the phone is attached firmly and you enter the weight right, those programs are actually pretty accurate.

[mister]

Performance numbers, on a GS500?

Michael

[tom.gabriele]

Performance numbers, on a GS500?

Michael

I just want to know how the things I am doing to the bike are affecting its performance. I know I am not riding a high performance bike; I have a GS because I want a GS. I'm just curious.

What spurred this question was the recent valve shim replacement. Replacing the exhaust valves cured my rough idling, and I *think* it feels better throughout the range, but I just want to figure out some way to be sure.