ALFAGTV6.COM

bmacf · Post by **bmacf** » Wed Nov 23, 2005 3:37 am

Hey who has installed a wide band O2 sensor for use with Megasquirt? What's the best sensor to buy, and what hardware is required? I assume that WB makes tuning a little more precise?

Thanks for the help,
Bill in Maryland

Mats · Post by **Mats** » Wed Nov 23, 2005 3:58 am

Looks like the Innovate Motorsports LC-1 is the simplest and cheapest solution.

http://www.innovatemotorsports.com/products/lc1.php

zambon · Post by **zambon** » Wed Nov 23, 2005 4:06 am

I second Mats' recomendation. $199 at www.diyautotune.com
It states comatability with Megasquirt on that site. I plan to buy one when I get my MS going (modified for L Jet Alfa).

zambon · Post by **zambon** » Wed Nov 23, 2005 4:07 am

That is "compatability"

firefox · Post by **firefox** » Fri Nov 25, 2005 7:32 am

I got a Techedge 2C0 and the LA1. The 2C0 unit is so little and therefore so easy to install.

No problems so far with the TE units.

MS worked great with the WBlin from the TE unit!

ciao

bmacf · Post by **bmacf** » Sat Nov 26, 2005 5:23 pm

Hey thanks for those suggestions. I checked out the Innovate Motorsports WB sensor (will check out the other one in a bit). So it looks like you use the analog output of the sensor as an input to MS. Then you just tune like you do for an NB sensor?

Thanks for the suggestions - nice to know there are proven choices.

Bill in Maryland

enzo · Post by **enzo** » Sun Nov 27, 2005 3:49 am

bmacf wrote:Then you just tune like you do for an NB sensor?

no, you have to set in the settings.ini that you use a WB....for example the 0-5V output (NB has 0-1V)

Code: Select all

#group LAMBDA_SENSOR "Lambda Sensor Type"
   #unset NARROW_BAND_EGO      "Narrowband Sensor"
   #unset WB_1_0_LINEAR        "Wideband in NB Emulator Mode, 0-1v 1.5:0.5 Lambda"
   #unset AEM_LINEAR           "AEM Gauge AEM-30-42xx"
   #unset AEM_NON_LINEAR       "AEM UEGO Controller AEM-30-230x"
   #unset DIYWB_NON_LINEAR     "DIY-WB or Tech Edge non-linear output"
   #unset DYNOJET_LINEAR       "DynoJet Wideband Commander"
   #  set TECHEDGE_LINEAR      "Tech Edge sensor giving 0-5V 9-19:1 AFR"
   #unset INNOVATE_1_2_LINEAR  "Innovate sensor giving 1-2V 10-20:1 AFR"
   #unset INNOVATE_0_5_LINEAR  "Innovate, PLX 0-5V 10-20:1 AFR"
   #unset ZEITRONIX_NON_LINEAR "Zeitronix Non-linear WB"
   #unset WB_UNKNOWN           "Wideband sensor but none of the above types"
#endgroup

Jose_76 · Post by **Jose_76** » Thu May 11, 2006 11:04 am

There's something about WB for MS that I don't understand. If you need the sensor to provide a signal to the MS so it can calculate after it, Why is the WB cotroller unit needed???

Shouldn't be enough with the sensor and a cable to the MS?

P.Webb · Post by **P.Webb** » Thu May 11, 2006 11:51 am

The controller controls and calibrates to the sensor. The output from the controller goes to the MS. MS recieves 0-5v when switched to UEGO mode. Then you can do target-AFR tuning. MS has nothing to do with the sensor or controller. It only gets the AFR voltage.

Depends on whether you're using the L1H1 or LSU4 sensor. I like the LSU4 (Bosch) because it's cheap even though the controllers are expensive. By all odds, you are going to replace the sensor more often than the controller. $50 from any Volkswagen dealer isn't bad.

-Peter

Mats · Post by **Mats** » Thu May 11, 2006 1:54 pm

Welcome back Peter!

Jose_76: A WBO2 is not just a passive sensor, it needs a regulator circuit to be accurate. MS cannot do this, VEMS can however.
There is a new WBO2/EGT instrument available in the VEMS webshop, looks like a good buy.

Murray · Post by **Murray** » Thu May 11, 2006 2:34 pm

I am currently using the Innovate LC-1 unit on my 86 GTV6 2.5L running MS II V3.0.There is no doubt that if you want to be able to accurately tune your fuel table you need a WB.The downside is that it adds another level of complexity to an already difficult ( at least for me

) task.Follow the supplier's installation instructions 100% re grounding etc.if not you're going to be frustrated.Innovate provide excellent support on their website BTW I speak from experience.

Steve R · Post by **Steve R** » Fri May 12, 2006 3:53 am

I've an innovate LC-1 on mine, but can't currently get it to report correctly on the MS software, it currently flits between ludicrous end of scale readings but occasionally just reads bang on stoic for a couple of seconds !!!

Not sure why yet, but no doubt it's something I've done wrong. I just need to go through the install & config step by step once more

Anyway, gives me another excuse to be in the garage for a couple of hours....

Mats · Post by **Mats** » Fri May 12, 2006 4:44 am

Either that or you need to adjust your fuel map...

Murray · Post by **Murray** » Fri May 12, 2006 5:09 am

Either that or you need to adjust your fuel map

For god's sake don't tell him that Mats his map is what I'm using

Seriously though, Steve you've got to go through the LC-1 setup process with a fine-toothed comb both using the LC-1 programmer/calibration then in MS then in Megatune.Do not do anything different from the instructions re grounding or it will not read properly ie:grounds to engine block but seperate connection points for heater and signal or you'll get ground offsets (I almost sound like I know what I'm talking about

)
I also had a major problem with electrical system "noise" and had to install a filter on the LC-1 power supply.

Steve R · Post by **Steve R** » Fri May 12, 2006 5:48 am

lol yeah the map could be wrong!!! Except it was done on a dyno, using their WB - also an innovate unit - so I'm confident it's pretty much OK. I only put the thing on in readiness for future tweaks to save going back to the dyno shop each time.

Amusingly at one point my LC-1 reported an AFR of 2:1 which seems slightly rich to me

shortly afterwards it was a touch leaner, idling nice and smoothly at a reported 23:1 ! Didn't realise until then that my 3.0 might be a diesel!

Wide Band?