Hi, what would i need to be looking at to improve this?




Any advice welcome.

Thanks.

Can you upload a bigger pic?

Whats your current setup?

Need some more info..

Hi , the bike is running yamamoto half system, blueflame can, airbox is standard, 120 jets front 122 rear.

Thanks.

looks fairly decent , what are you unhappy with and what are you trying to achieve ?

That air fuel ratio is horrible. That should be flat as it can be on the red line. Power curve looks good though

Not sure why it's done in speed normally done in rpm

Yes would like to get the air/fuel graph abit tighter to the red line, what could be the cause of the fluctuation?

If i rides nicely, and feels good, i'd leave it alone, Does it feel rich ? if so maybe drop the mains down a size.

If it feels 'wrong' then I'd be dropping the jets to 118/120.

Could be the slides moving to fast. Have they had an extra hole drilled into the bottom of them. That can cause them to move to fast and ruin things.

I don't see why it's on speed Along the bottom, that doesn't show anything useful really. It should be in Rpm. And the smoothing factor, they are normally on 3 I think because on 5 like it is kind of covers a few more holes.

If it does need jetting which it looks like it might then there should be some lost power to be brought back.

THeres a good place in west Norfolk for dyno work, called X bikes.

Try them if you are looking at good work.

Power wise 58 is very good, bining rear pads and chain can easily take away a couple of horse power.

As others have said, how does it feel? the power curve looks nice and linear, try not to get over obsessed by air/fuel graph, people who tune to this alone often churn out bikes that feel horrible to ride, having said that you can probably get it fuelling a little cleaner but hwo much more it will change the curve i dont know, if the smoothing on the graph was knocked down a little youd see more twitchyness i suppose.

Its all down to time and cost, id consider 118/120 or 115/118 jets though.

As for everything else if its ok dont fix it, the more you try to get power above what you have the more it turns into a race bike, which means it doesnt ride as smoothly on the streets.

What are you hoping to get?