Hondata + wideband

[Chr1s]

If you will be doing any tuning yourself, get one, otherwise you don't need it. WBO2 sensor's have a finite life and the heating control unit that powers them can affect this, some are better than others. As Sexc86 said, the Bosch 4.9 is a good sensor.

[Adrian @ SAS]

You'll need to buy a kit with the guage/wide band controller as the S300 can't control the wide band.
Then connect the 0-5v output from the guage to D14 (ECU)
Enter the software & configure per instructions supplied with guage/wide band controller (As comes with the AEM product you mentioned)
Ie: 0v = 0.xx lambda / 5v = 1.xx lambda etc

[cbauto]

So much knowledge from the above 2 members.

[Chernoby1]

Can the s300 do digital input for the wideband signal? If it can, much better going down that route than using 0-5v analog. Thought its not very common, ive seen solid levels of EMI in some cars that send things out of whack (imagine like +-0.1v of noise... if the controller output is linear between 0.5-4.5v your looking at 5% inaccuracy simply due to EMI).

If you do go down the analog route and the s300 has some flexibility, try to avoid setting 0v/5v as any reading. Rather set it up so that if it hits either of those two so the CEL comes on. if it ever hits 0v/5v you know somethings gone wrong with either the sensor or wiring (nothing to do with the wideband really, but rather any analog sensor system.. try to avoid using power source voltage or ground as a valid measurement)

[Adrian @ SAS]

Only S300 V2 & only with digital output capable controller.
FWIW most engine management sensors run on a 0-5v analog system.
When wired correctly, there is generally no issue & why shielded wiring should be used (analog or not)

[Chernoby1]

Ive never had issues inside the engine bay, but have with cables running past electric motors (I had a huge "nu duh" moment when wiring up a hybrid....not the powertrain motor but the interior electric fan!)

[Chr1s]

To be completely fair with the whole "inaccuracy" issue - the wideband is simply a tuning tool, it's not a 100% figure you can hold to the wall, a high end exhaust gas analyser (a WB02 is essentially this) will give you a more accurate figure. Depending where you place the sensor in the exhaust will change the value slightly and if the controller has been calibrated to the sensor properly (Bosch print the calibration numbers on the sensor housing) - I think some units don't allow for "self calibration", they just go off the numbers printed on the housing - it's fine until you get towards the end of it's life. I've never seen a highly erratic WB02 plot, with 5% error and a known base of 14.7, the value would be fluctuating +/- 0.735 which for idle would be quite strange for a typical engine/placement.

Anyway, you use these to work in delta not to aim for a specific absolute value to the nearest decimal place.

[infurNOS]

Most dyno's have wideband already for you. I believe they stick a device in your exhaust pipe? Best to have a discussion with your tuner.

[Chernoby1]

I used the wrong word again!

By inaccurate, I meant the problem of noise/jitter... without some form of filtering makes closed loop control very difficult. If they're not looking into doing closed loop (for whatever reason), most of my input us irrelevant.

Im just a computer systems guy and who doesnt like analog in general... mainly because I work on prototype stuff near exclusively; so take my words as those of the guy who hates designs that are difficult to troubleshoot when they dont work... and troubleshooting software/digital signals is wayyyyy easier imo

[Super-DA9]

I have an AEM UEGO setup. While it was hooked up by itself it was sweet. But for some reason once it was hooked up to the ECU the gauge fluctuates a lot, especially when cruising.

However the signal the S300 was getting from it was fine, so it must be something with the gauge.

[Adrian @ SAS]

Nothing wrong with the guage, just means the closed loop function in ECU is working properly

[Super-DA9]

Nothing wrong with the guage, just means the closed loop function in ECU is working properly

Oh really??

I thought we couldn't figure it out LOL. Shows how good my memory is...

Is there a way to have it read accurately with closed loop active?