Is O2 sensor needed with Alpha N

Martin I currently use V2.20 on my AN (which is an even older version that your AN). It also has just the 3 pin X3 plug.  Strange that the software crashes, perhaps you send a more specific bug report?

Ask your tuner to provide the binary file. Then you can take a look at it, and also see what is different over stock.

you cant run any sort of wide band lambda control -- only narrow band control.  You can hook up the stock sensor to the engine harness (IOW you run both WB and NB sensors at the same time)  or you can use the NBsimulated signal from your WBO setup and feed that to your engine harness (using a special connector).  In either case, you have 2 options:

-- blue + black closed == motronic O2 is switched off. you can switch on AN O2 control  (via the AN control software)

-- black or blue open (but not both) == motronic O2 switched on. in this case DO NOT turn on the AN O2 control.

if you run motronic O2 control it is active for loads up to 80% and rpms up to ca. 4800 rpm.

if you run AN O2 control, the cutoff rpm is ca. 5000 rpm and the load cutoff is programmable "controller poti limit" on the "oxygen control page" in the AN control software.  To edit use the tab key to navigate to the text box and the cursor keys to move the value up or down.  The value is a number between 0-255, the value in percent is your entered number divided by 255. e.g. to cutoff O2 control at 70% load enter a value of 178 in the text box.

With a WBO derived NBsim -- the response is very quick. You can suddenly increase throttle from 20% to 70% and hold that throttle opening,  the O2 controller will quickly bring the lambda value back to 1.0 (14.7 AFR).

conditions where the controller might not bring the O2 value back are when the "integration limits"  (default == +/- 40) are exceeded. If e.g. at the load site of 70% throttle the map value is far from the necessary value to produce lambda=1, the O2 controller will try to currect this up to +/-40 units. Once this limit is reached, the O2 controller will switch itself off and your mapped value is considered "out of bounds".

The closer your open loop map (== all O2 controls switched off) is correctly tuned, the less the O2 controller has to correct, the less likely that any controller limits are reached.  My open loop map is very good (== the correct lambda value under particular load and rpm conditions) because I drove that way for about 1.5 years fine tuned it.  Now I run the AN O2 controller fed via the NBsim signal.

John

 

215DMX wrote: UweM3 wrote: what's the red LED for??? BTW if you need some super bright LED's let me know Uwe, its from the LC-1, tells me about status, errors and stuff, didn't you wire one in th Sunny's car then?

yes, but the display shows you all the information you need. The LED is for use without a diplay. Read the manual?

John,

Yes I am sure that there is only 3 pins on my X3 plug. The Maxx will still show the signal?
I'm on the 2.16V software. I tried to use the 2.20V software but it keep crashing. I'm sure that it had an added Lambda icon on the fuel map page.?

My cars runs open loop ( both blue and black conected?) As far as I know Bexleys write the same info to all parts of the chip. So if I disconnect the black ones that should bring the Motronic O2 control back on. But how will this work unless the Innovate connects into the engine harness for the Motronic to read the WB signal?

How many of you run with the O2 control on be it either the Maxx or Motronic one?
I never used either until I thought that something was out on the mapping side. I still can't work out why one exhuast pipe was a different colour ( one a rusty brown the other sooty black) to the other one.
I'll see how it is when I get it back.

Edited by M3Pilot

a quick reminder of what a Innovate looks like.

I think I'm going to have to get one of these, as I could really do with it. AS long as it easy enough to link up with the Maxx.

Didn't they change the Maxx loom recently? I've had mine for a good 18 months now. Will II still be able to link the Innovate WB02 to the Maxx harness?

here is how the WBOs are connected to the AN:

john.gmstech.de/docs/an-te.pdf

its all pretty simple.  you can evaluate logs to aide
off line tuning of your map.

then you just need to learn how to tune it on the street :)
this is the quickest way to do it.

I use a combination of left foot braking and throttle to reach
all the desired load points. Works perfect and you dont
kill brakes. Ask Kevin if his brakes are still ok,
I helped him with his on the backroads
in the Eifel on one of the Ring trips.

If interested I wrote a rather long desription of how I do it on S14.net
search for "tuning guide to AN" or something like that.

it is not hard at all you just need to overcome the fear of
messing something up :)

John

Now I see Uwe, thanks, looks like the innovative unit wil cover everything then.

stevesingo wrote: Eamo, I take it youv'e seen this Airbox Steve

i did boss. thanks for that.

you dont really need the WBO to do ANY logging. The AN will log all you need to know. TPS, RPM, AFR, LMOUT, etc.

did you see the pictures I posted in the other AN thread? that was from an AN log file.

John

 

The innovative wbo2 sensor does not have rpm logging,is this needed with the Alpha N setup.