So as a new member I started a new topic to find out whether any of you guys have hooked a wideband on ur exhaust. i'm intrested on any measurements on all of the line models. i'm logging my CF1000 cforce currently, and found that though off mods I've done, its NOT running lean.
I would love to hear from people with the same engine, as I've found that Attitude industries have dynoed a Zforce 1000 to gain severely from exhaust and fuel controller. I'm not 100% sure it is the same engine but... I just cant see how one could gain anything with fuel controller thats already running rich.

My model: Cforce 1000
Engine code 2V91Y
Mods: custom muffler with decat and uni filter
AFR:s :
Warm idle ~low15's
cruising ~low15's
all above running closed loop with O2's
WOT from cruising: ~12.8 upping to 13's running open loop without O2's

So, as factory running machine on Bosch ECU with few mods, I'd say its running pretty decent being a bit leanish on cruise and idle, but pretty rich on WOT. I like it running leanish for better MPG, and for it running well on these afr's, but i'm intrested having it being spot on as for WOT.

Those of You asking for altitude; I'm 500ft, and I think this machine has a barometer to compensate for altitude.

If someone is thinking in lambda: http://www.tatech.fi/cms/uploads/Lambda_vs_AFR.pdf

I'm running innovate MTX-L


So my conclusion is, that its running leanish for cruising (EU regulations?), and guite rich for WOT.
I've just found a company selling ECU optimisation for these machines. I'll put another topic for that.

[2015 Z Force 800 53/Trail EPS]

Over my head. Hope you find the answers you seek.

I've not data logged any AFR CFMOTO products, it was always my plan to do that. As well dyno & see what was going on during cruise & WOT conditions. Very unlikely that will ever happen as I've given up on the brand, however I do have keen interest in tuning & will offer a few comments 

In a closed loop conditions I would expect the NB's would be in the stoich of 14.6 - 14.7. You are seeing low 15's warm idle & cruise, that suggests to me you have a WB calibration issue.

If I were to dyno, I would expect the best torque would be in the the 12-12.5 zone. Fuel is power & safe to keep these marginally built engines alive. As you mentioned this would be in a OL condition. Assuming your WB is reading .5 to high or lean I think you are in a safe zone.

As far as altitude the ECU will be monitoring atmosphere pressure & temperature, adjusting the fuel map as needed. There no MAF so it is a speed density calibration only.

My assumption is your WB is reading high, the reason is NB's are very accurate in a very small window. If I'm correct & apply the error I would be happy with your results as they are as expected factory calibrated.

Hi and thanks for your input 

You are absolutely right for issue on my wb readings. As I expected, I should be seeing 14.7 at all times when on closed loop. As I've found out, I might have a minor leak somewhere on the exhaust. I have calibrated my wb and the results didn't change. But on idle, blocking the tip of the exhaust changes my readings to 14.7ish. I believe I can trust my wot readings since the leak is so minor I can't point it out.

Interesting thing though, I had to change my original paper filter back on and saw wot readings go ~.5 richer. Maybe proving the uni filter flows better.