Koso Air/fuel Guage on M series??

[MAINE BOONDOCKER]

cat sells a dc regulator that will replace the ac one.well this is for a 09 m8.probaly not going to help but i figured i'd throw it out thier.MB

 

[Daltech]

I did some tests tonight and found out a few things. Sled is an 06 crossfire 700 and I taped into the red and black wires directly from the regulator. I checked these tonight with a voltmeter and they are indeed DC. Voltage around 13v or so.

But my guage would not initialitize from this at all. Not once, even after multiple tries. Numbers would be all over the place and eventually I would get an error. Even measured voltage with the guage hooked up and it was still fine. And the guage always works fine from a battery.

So I was thinking the problem pretty much has to be the fact that the voltage is noisy/inconsistent. I had a huge power supply capacitor kicking around and I tried placing this across the wires to smooth things out and sure enough, guage powers up perfect. No more inconsistent numbers or errors. I just had it running in the garage, dont have enough snow for a big test. But im pretty confident that the inconsistent DC voltage is most of our problems considering I went from never having a sucsessful start to it working fine. Any suggestions on how to fix this without having a huge capacitor or battery on the sled???

Ok, that`s wire colors does not match the colors on the M6, so there has to be a difference in the electrical system for the sleds.

 

[Daltech]

About the Kosos, I installed it on 3 sleds now, my own, a M1000, and a dragon. All seems to work pretty ok when pipe heats up. One thing I`ve noticed is that the 2-stroke adapter is a waste. Tried it on my and the dragon, and it will not stand heated when the adapter is installed. Just run whitout it, and maybe change the sensor more often.

 

[mmurray70]

I made a smaller version of my filter for my guage and now it works fine. Went with a smaller capacitor then i tested with and put a diode in the line so only the guage can draw from the capacitor.

Still bounces around a little before initialitizing but it always does eventually. Before it wouldnt start at all.

I've only had a few short runs in a field. A couple times it would display very high numbers and eventually display L after comming back to idle after a short burst. Anybody have any idea whats up with that? Im starting to wonder if i should have kept my digatron...

 

[jijohans]

Is the Koso just as good as the AEM WB? Does the Koso self calibrate, or must you free air calibrate before use..?

 

[Headrush]

I just installed the Koso on my M8 and it was wicked easy to install and works great. I fired it up and it slef calibrates and reads A/F within about 20 seconds from start up. At idle I am showing 14.1 and with a little gas a bout 13.3.

I like it so far...