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Went for my MOT on Saturday and ended up with the bike on the Dyno machine, sure is a sight seeing your bike put through its paces, even on the other side of the glass the noise was amazing...aircraft like!! Anyway he did a printout which i'm sure would make sense to you lot and eplained the options of how to make things more efficient with the ECU/Mapping blah blah, so heading back to get the work done in a few weeks, nice bloke based in Earl Shilton and near Mallory Park he works and sets up a lot of racers bikes including Rutters BSB.

Let's see the graph then!

Check out that beastly flat spot at 5-5.5k!

Good peek power figure, but the air/fuel looks a bit odd in places

Will look healthier when it's remapped, etc

What's your set up at the moment mod-wise?

Well at least we (he) knows what's wrong with it, means more to you lot than me, LOL!! So planning to go back in the next few weeks to get it sorted

Mods wise only a K&N filter and twin port Carbon Can Co cans, everything else standard apart from cosmetic mods that is!

Looks weak at the bottom end and rich at the top, if Im reading it right.. and rich at the 5k dip, so mapping that out may help..

I think ive got the air fuel ratio the right way round.. higher figure = leaner mix?

Slopes in a similar direction to mine, which is rich at the bottom, lean at the top. A lean spot at 5000rpm would back that up as that's to do with the emissions test rev range.

Seem to remember reading mine the same way you did when I first got it, then the dyno bloke said no, it's the other way round.

Interesting comparing my old Fazer to the Missus' FZ6 Fazer, my fuel graph was all over the place but the torque curve was fairly smooth, her fuel line was spot on, almost flat in places, but her torque curve was really wobbly.

He was partly answering me FM..

.... graph axis is labelled A/F .... so bigger number give a bigger amount of air to the amount of fuel = weaker mixture.

So from the graph, Kwakerz is right ..... could be that they're not plotting what they say their plotting if nooj is right.....

Didnt think i was going totally mad.. but Nooj's comments about the dip, etc do make for a bit of sense

Im intrigued now! Dynos are absolutely great, it's not the peak BHP that comes in as interesting, thats a by the by thing, but the fuelling and delivery of the power that gets the old juices flowing, then the fiddling and fettling to change it round, snatching the odd horsepower from the jaws of death, smoothing and improving the delivery and the like..


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What..?!! you know you were secretly thinking it..

no comment :)