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Discussion in 'Thumpers' started by joec63, Sep 4, 2012.
Sure, but I would like an open source ECU and a big bore.
Even some systems on cars would pulse the injectors with a closed intake valve, the mixture just hangs around before being sucked in.
Some bikes must do that as there are no cam position sensors and there is nothing to tell between TDC on the power stroke or the exhaust stroke.
Any thumper without a cam position sensor would HAVE to do this.
The computer can be programed to sense when the combustion stroke happens by monitering the increase in crankshaft speed. With the proper software it is possible to fire the injector at the corect time with only a crank sensor. Some cars do this when the cam sensor fails so they cam still run in limp in mode...
There's only one O2 sensor, and thus at the exhaust port.
The title is a little confusing where it's placed, though ...
If I change the gear ratio from 14/40 to 13/43 will this give me better performance off the line?
About air induction, after having corcked it and disconnected the O2 sensor, following BDSB suggestions here http://bestdualsportbikes.com/dual-sport-bikes/2013-honda-crf250l/ and installed a dBkiller of my own, i had many stalling problems. That was cured by re-plugging the secondary air system and setting the first EJK parameter to 0, what got me rid of backfires too. Replugged also the O2 sensor, as i was there.
Doesn't seems logical, since i probably leaned at idle, but that's what experimentation concluded in my case.
Whatever .. i will try to experiment more with teh EJK setting (which you can emulate here http://www.electronicjetkit.com/demos/HPcurve.swf press mode, then + or -)
They just illustrate both AI and O2 sensor in this picture ...
What is shown with the little arrows
New member, as I was recently granted permission to join from a fellow owner Finally purchased a CRF after about 7,000 kms riding on rented machines in Thailand. Mine has 330 kms on it now. Going to get a new exhaust on tomorrow and new aluminum bar. Got other goodies coming over the next month or two.
Look forward to reading about all the mods coming out for the bike.
Here's a video I made in Thailand - footage from 2012. Stock CRF riding down doi suthep with a modified KLX
<iframe src="http://www.youtube.com/embed/FcToMLUNrQw" allowfullscreen="" frameborder="0" height="315" width="420"></iframe>
Welcome and congrats for the video. I can feel the pleasure of driving
13/42 and you won't have to mess with your chain.
This will help make it a quicker bike? Is this a hard process to do?
Thanks man, is this easy to do?
An impart driver helps to get the rear sprocket bolts out. The kind you hit with a hammer.
Otherwise it's pretty easy.
check this whole page http://advrider.com/forums/showthread.php?t=823409&page=166
Great thread, took me a while to get through it all. I just picked up a 250L a couple weeks ago and love it.
Hey Krono are you sure you didn't mean this link??? http://www.advrider.com/forums/logi...1603-72de6ed564ca88a57ffc17a336a645a34e296c8a
Good try !
Wait, it will get someone...