KOSO Wideband O2 on M-Series ?

[iahegdal]

I am having problems getting a KOSO WBO2 to startup (initialize) on a 09 M8. Once I do get it to the point where it reads A/F numbers it works fine. There is a thread on the "Performance" forum with details.

Does anybody have first hand experience with a KOSO on a 09 M-Series? How about 07 - 08 M-Series?
Has anybody been around a KOSO working on one of these sleds?

TIA

 

[diggerdown]

Make sure you have a rectifier in the line to feed DC power.

 

[mrquick68]

first - i believe the KOSO is DC, so i don't think a rectifier is needed. I had problems getting mine to work and found it i had to reverser the polarity and then it worked fine. Go figure? Well, i've only let it idle so far, and at low idle speeds it seems voltage is a little low for it to read. I'd like to see this discussion keeping going on here though.

 

[Woody67]

I would like to see it continue as well. I started a thread on DC power as I was informed 09s produce AC only. Previous models Ms are DC output. I will list the questions i have. I am doing a build on an 09 M10 and have a KOSO A/F gauge. I want to be able to install it and have it work correctly first try.

1.do we need some type of conversion (cat has a kit for 09 specifically for this/not available yet contains a DC regulator)

2.do we need additonal power (battery source) it seems as though the sensor heater needs good steady batter power to heat correctly

3.best place for o2 sensor no turbo

 

[mrquick68]

Well i ride an 08 M1000, so mine should be good to go.

but yes, i heard the same thing about the AC on 09s.

i don't think so with the battery, but???

And the best plan i've understood to put the 02 is in the input tube of the can. that's where i put it.

 

[Donseye]

You should either wait for Cat to produce the Rectifier/Voltage Regulator or install a battery and run your AC accessory wire to the battery and then run 12v dc to the gauge and the sensor. Install a switch to the sensor so you can turn the sensor on before starting the sled. This will give you a more accurate reading as well; and prolong the life of the sensor.

I have an 09 Crossfire and have been working through this issue for the last few weeks. I tried installing an AC/DC converter with out the regulator...not so much! I'm going with the battery idea...the AC accessory will charge the battery ( still will need to charge the battery fully occasionally). They tell me if you warm up the sensor first you will get a much longer life out of the sensor.

 

[Steamboy]

ttt

 

[scaldedcat]

Is it easer to tune with a o2 sensor? or egts Ive never used the 02 Ive had egts
on several sleds but they aren't perfect and it can get real expensive real quick.

 

[iahegdal]

Update - KOSO went to the trouble to borrow a 09 CF8 (they couldn't find an M series in their part of Canada on short notice) to test the instrument operation/compatibility. It worked fine for them so the sent me a replacement. I put it on (by now I had moved my gauge to an 07 M8 and had been having the same problem as with the 09 M8). I had 100% successful starts (11 of 11) when just out of a warm garage. I also had 100% (10 of 10) after sled had been outside for about 1.5 hours at 5*F ( -15*C). The display is a little slow updating at this temp but this is also 5*C below low temp specification for the gauge.

So in response to my initial post , I can say I have seen the instrument work fine on a 07 M8 and I think it will be fine if I ever move it back to the 09.

 

[BigRed118]

Please let us know how it works on the 09'

 

[iahegdal]

At this time I don't have any plans to put it back on the 09. I put it there initially to get stock baseline A/F numbers that I could use to tune the modified 07 to.

The only tie in to the sled is for 12 vdc power. I'll post pictures later, I need the scale them down for this site.

 

[PJ06M7]

iahegdal,
Would you mind posting the A/F numbers you got on the stock sled?? I too am puting on a Koso A/F gauge and am curious what you got for stock mapping.

 

[mrquick68]

sorta related, but i don't think i'd use stock AC A/F ratios for a baseline on an M8. 07 and 08 M8s ran VERY rich, much like the M7s did. The 1000s though seem to be much closer at WOT to perfect. SO, instead - you'll need to find what works the old fashion way on the M8. Plugs and wash - or choose an A/F ratio that you think is ideal (lazy way) and match that. 12.4 non-turbo comes to mind? is that right?

 

[iahegdal]

I started out planning to get numbers for L/M/H engine loads at the following Boondocker set points (5,000 - 6,700 - 7,800 - 8,100) but that can be tough to do out in the wild on a low light day. What I found was a very consistent 13.2 at idle and, basically, irregardless of the RPM a low load was about 14.3, medium load was about 13.5 and pinned was about 12.5. Now none of these various load numbers is static at the number listed, a couple of times I saw 11.9 at wot depending on what load and rpm I was coming from and at all load settings the numbers often fluctuated plus/minus 2-3 tenths. This was for a stock 09 M8.

I feel that if I try for the same ranges on my 07 with modified intake, pipe, head and porting that it should be safe. The A/F tuning will be done in conjunction with Digatron EGT.

What I am interested in avoiding is engine damage on that once or twice a year perfect day when it takes 7/8 + throttle to break trail on the flat and the only way to make progress up a hill is to poach track and turn out.

 

[mrquick68]

those numbers sound very typical to what i've seen listed else where. sounds like the 09 M8s are running leaner than the 07s and 08s. Good to know - just be careful when adding mods!

 

[PJ06M7]

iahegdal,
Thanks for the info. Where did you mount the sensor?

 

[iahegdal]

Pictures attached. Some are the stock pipe and one is the SLP