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- Fuelling and Intake ( https://www.xt660.com/forumdisplay.php?f=207)

- - Fuelling Fix ( https://www.xt660.com/showthread.php?t=55)

Ok! Then i understand:023:

I thought you were leading in air from the first chamber into the second....without passing the filter.:BangHead:

Hi Kev ,nice genius thinking you are doing for us all.Q- how much do i have to increase the CO nr because of such air intake mod.
All the best
Krister

Quote:

Originally Posted by gymtrainer

Hi Kev ,nice genius thinking you are doing for us all.Q- how much do i have to increase the CO nr because of such air intake mod.
All the best
Krister

Hi Krister.

If you are running a STD bike besides this mode, I would expect the CO would be between 30 & 40 in the CO1 screen.

Hi again Kev! I have been searching in the forum for all kind of mods to do to my bike .I have XTX 06 model with stock exhaust and my intentions are to do such mods ,can you confirm that i`m in the right direction. What is nessesary and what is meaninglesss ? 1. throttle adjustment to 22 ? 2. Co to 30-40 ? 3. remove snorkel and add 2x50 mm holes to airbox. 4. variable resistors to both air and coolant . 5. engine breather +L hose between the swingarm. 6. 30 mm hose mod. At the moment i dont want to adjust Powercommander and aftermarket exhaust but need some free for charge extra boost.
Thanks forward for your time.
Greets K

P.S I`m sure that many members are very thankful for your advise.

Quote:

Originally Posted by Kev

[ATTACH] Attachment 190[/ATTACH]

The photos, engine breather mod. Don't forget to block off the Airbox after the mod.

I have now made that mod. And my first thought was that it will probably not even make any difference.....
How wrong i was. I now have a even smoother engine than before specially when you turn off the throttle. Before it was like turning a switch of but now its more soft. And i dont know why?
But it feels right anaway .

Quote:

Originally Posted by gymtrainer

Hi mate

Let me get this right, 06 model with STD exhausts & no power commander.

No need to adjust throttle sensor on a 06 model.

1.
I would carry out the Engine Breather Mod L pipe. ( Purer Air ) Don't for get to block the airbox.

2.
I would remove the intake snorkel & cut the intake bigger, drill the 2x holes. ( better breathing ) I would also fit a K&N or DNA filter. You can also remove the silver gaused plate on the STD air filter this will let the STD filter breath better. It is a flame retardant screen. I ran mine off for a few months before I got a K&N filter.

3.
Increase the CO to between 30 to 40. ( To richen up the bottom end )

4.
If the bike feels lean, I'm sure it will. I would carry out the Kev Mod with the variable resisters. Set both resisters to 5 DegC below the actual reading after motor is at running temp.

Remember all these mods don't give much more in HP, but a smother running bike with quicker acceleration with more mid range punch.

Hope that answers your questions

Muchos,muchos grazias amigo.The Estonian XTX fans are now in action.When done i give feedback.
Thanks a lot K.

Quote:

Originally Posted by Stoppsladd

When removing the engine breather you not only getting better air quality, you are also changing the inner airbox pressure when the throttle is closed.

With the engine breather connected to the airbox & the engine running at speed, the crank case pressure can be high. When the throttle is closed, pressure from the forced crank case & Atmospheric pressure is read by the pressure sensor. This pressure will be higher, then with the engine breather disconnected.

With the engine breather disconnected & the throttle suddenly closed the pressure build up does not occur only Atmospheric pressure present.

The ECU will run in a different map position.

That's why it feels different when the throttle is closed.

Quote:

Originally Posted by Kev

Ahaaaa!!

Now i understand. But i didnt think that a thing like that would affect that sensor. What do you think of the fueling mix now? Will it go richer now because of the lower pressure or is it the opposite way?

Quote:

Originally Posted by Kev

[ATTACH] Attachment 190[/ATTACH]

The photos, engine breather mod. Don't forget to block off the Airbox after the mod.

Will take home my camera tomorrow, it's at work. Photo's taken by camera phone. Will post clearer photo's tomorrow night.

Hello Kev,
Last point about this modification.
Don't you think that puting a filter instead of a L hose at the breather engin hose end would be a safer solution to keep the particles from getting into the crancase chamber?
L66