Don't get me wrong, I love my xt but I wonder what another 10-15bhp would be like. The gains in decent bhp increase are too costly for me, I've got a stage 1 filter and removed the snorkel and its made a slight difference. I like the idea of new exhausts from the weight saving point of view as much as any bhp increase.

I agree with ya, but, 10-15HP normally comes with Higher Compression, less oil capacity, Lighter Frame and bike, no cush drive, alot of vibration etc.....

I owned a KTM690SM for a few months earlier this year because, like you, I wondered what an extra 10-15hp would be like.

In a word (for me at least)...horrible. I should have known this before, but I again realised very quickly that the charm of the single is in the relaxing manner it makes it's power, and the low-down torque delivery. To get that extra 10-15hp from the KTM you have to be constantly wringing it's neck over 5000rpm and, when it drops below 4000rpm, it's chain-snatch time. For me, the extra 4-9hp gain from the Stage 1/2 or the Stage 3 is just right. In future, if I thought I wanted more than that, I would buy a different bike. Just my 02c worth, I'm sure there will be other points of view.

I love my thread, it has had over 1000 views now!!, and some really good points, comments, helpfulness, information, discussion, points of view....what more could you want?:038:

Thanks to all contributors.....:038:, and thanks for being such a good bunch XT660.com:038::038::038:

Probably the best forum...in the World.

Ok here is your fuel map loaded in to my PCIII with the exact same mods.

http://www.youtube.com/watch?v=QySYSDHBblc

Here is your log table in detail for this run.

Device Log 3

http://www.4shared.com/document/1gjaBhZX/Device_Log_3.html

Basically this tells me your fuel map is to rich for my bike with the exact same mods. I was data logging peak hour traffic so don't have a complete rev range A/F ratio data log.

Kev, thank you very much for trying my map on your bike.

You have proven that my AF figures are out.....if your bike is running rich, my bike is running even richer!! (as I am running a richer fuel, 97Ron)
But my AF figures say my bike is running too lean!!Doh!!

Well, I am looking forward to the Dyno on Saturday, if I don't gain any more HP, at least it will be using less fuel..........

UPDATE... I have taken my bike back to the Dyno and left it with them, I will be collecting it on Tuesday, as they are closed on Mondays.

On the runs they did last Saturday, the AF fluctuated 3 points (between 16.5:1 and 13.5:1) at peak power , 6000rpm, on different runs. It just doesn't seem right. (And I just hope it is not the fact that I am running 97Ron petrol that is upsetting the ECU/ O2 Sensor as well).
I'm sure it was just the way their machine took the readings which was wrong.

So, we'll have to wait until Tuesday to find out....

Well, if you watch Kev's video on youtube, you can see that the AFR Fluctuates between 13.8 and 11.8 because of this O2 sensor problem.

Maybe thats what you're seeing?

hi Daz,
I can see fluctuations on all the maps, its the parameters that are all out. Even at 7000 rpm I have a 3 point difference in AF.......between the first runs , and the last runs.

i think the Vid was more for you, than for me Daz!!! but it was really useful to me.....

Sorry mate, I meant the video I linked like much earlier in the thread, of when Kev video'd his own XTX and the AFR ratio dipping every 10 seconds for turning off the O2 sensor.

You'll find the Powercommander on the dyno will see this and over compensate giving you a map thats all over the show which could be what you're seeing.