I have a 2004 280 Pro. I run the stock ignition curve with a fast throttle and a 10 tooth c/s. I am an intermediate level rider. I am curious about several items that could improve the bikes performance. I hate to leave things alone, especially stock.

First is reeds, anyone have experience with Boyesen and V-Force? What do they do? Are they worth the expense on a one year old bike?

Second is the header pipe? The 05 Gasser has a longer one, does this improve low end torque?

How about the mineral oil system for the clutch? Does it improve performance? How about riding in temps from 20-90 degrees F?

Has anyone tried programming the ignition to a more agressive curve? Any comments? I was thinking of trying a faster cuvre with a slow throttle.

Thanks,

John - 04 280 Pro, 75 TY175, 79 Cota 348, 75 Cota 172

I am pretty sure the standard 04 power curve is the quickest. I have the 300

raga with the longer front pipe as standard and yes it does improve low down torque.

I would suggest a keihin carburetor. This would give you smooth but stong power at the bottom and it will rev harder and cleaner in the mid to top end range.

how much ****** power do you want. i have an 05 280 which is softer than the 04 and it has enough power to propell me up anthin i dare do on hard course. As a good friend of mine told me you cant alter one thing without having to make adjustments to other things! (DJ) If your that desperate though the Khein carb would be the only mod which will give you significant benefit. You would have to make sure you got the right slider for it though!

Thanks for the feedback. It sure sounds like the Keihin carb would be a good choice. The feedback I received from several others on the MCtrials mailist suggested the same mod.

I am pretty sure the standard 04 power curve is the quickest.

Actually the standard curve is by far the softest (on the standard Pro, not Raga). All the other curves are more aggressive, with the Raga being the most extreme...and potentially dangerous, as it has NO rev limiter (or so I'm told, as I didn't test that little feature on my bike )

Bottom line is for an intermediate or lower lever rider, the '04 curve is probably best. Smoother and more fogiving than any of the others. For playing around, or for advanced level riders, the more aggressive curves might be better. Lots of fun for playing, but I always go back to the '04 curve for comps.

10 tooth front sprocket? was that the standard one? if you dropped down, I would recommend going back up. if not, disreguard this...

If you can get hold of a cylinder head of an early bike (2002 pro I think), these heads had a smaller capacity giving the bike more compression and therefore more power.

Cheers

Chris