whats the best wideband?

[Tbone]

The JAW has a simulated narrowband output, too. I don't know yet how easy/hard it is to datalog. I'll let you know.

[Tbone]

Well, I got the thing assembled. Wasn't too difficult even for a novice like myself. Having some trouble getting it to communicate with my laptop. Hopefully, I will get it soon.

[Gutfeeling]

Aem Uego Ftmfw! Hth

[Trevor404]

Looks good, so did you have to buy your own O2 sensor or does it come with that one?

[rfb6435]

For the JAW you have to buy the 02 sensor and the wiring/connector seperately.

I got the sensor on amazon.com and the wiring/connector from a VW dealership in WA (online). Prices were about what was stated.

Assembly was pretty simple. I then bought some security wiring 4 wires and speaker wiring 2 more wires to make an extended cable to the 02 wiring.

I also mounted the connectors on the back side of the JAW and display so I can flush mount it .

-Rich

[tryingbe]

AEM works for me.
[IMG]http://www.************.net/tryingbe/dodge/Daytonaproject/finalgauges.jpg[/IMG]

[Tbone]

rfb6435 - I am having an issue with communication between my JAW and my laptop. Check out the JAW forum when you have a chance. Basically my question is, what voltage am I supposed to be seeing at the pin 2 and 3 of the serial port on the JAW when connected to the laptop (not communicating)? Do you know?

[speeduphoria]

Gotta be able to log IMO

[roachjuice]

so this JAW is it worth a shit? and when you have a wide band you can hook it in place of the stock narrow band?

[cdavis]

Quote:

Originally Posted by GLHNSLHT2 The stock 4 wire O2's are putting out 3.5-3.8v while running. Which is wideband territory. Didn't know you could have a 4 wire WBO2 and the sensors are a measly $25 at napa too. Pretty cheap for a wideband. Anyway just gave up after two days of messing with it. I need some more info on how they run before I try putting the wideband back on it. But it works great on 80's turbo mopars

These are not a wideband O2. They are NB. The reason for the higher voltage is that the O2 sensor ground is biased by 2.5 volts. Therefore the O2 should switch between 2.5-3.5 volts. Chrysler did this for extreme lean conditions, when the voltage would try to go below 0v, Now it will go below 2.5v and the PCM can see it.

[speeduphoria]

Quote:

Originally Posted by cdavis These are not a wideband O2. They are NB. The reason for the higher voltage is that the O2 sensor ground is biased by 2.5 volts. Therefore the O2 should switch between 2.5-3.5 volts. Chrysler did this for extreme lean conditions, when the voltage would try to go below 0v, Now it will go below 2.5v and the PCM can see it.

Exactly correct from what I've read, there are more cars like this now instead of using the 0-1v method.

Its still a NB with a 1v sweep, just it starts at 2.5v instead of zero like cdavis stated

[Tbone]

Nice display, speeuphoria! What brand do you have?

Roachjuice: From what I've read, the JAW is just as accurate as the namebrand units. It does nearly the same things as well.

My unit is working now, not with my laptop, though. Works fine with my desktop. I am getting a USB to serial cord because i think the serial port is messed up on my laptop.

I have learned that the JAW can output two different voltages that you can program. The obvious one would be for simulating the narrowband sensor, which I plan on doing. The second one could be for an LC-1 AFR gauge (if you wanted). Some gauges require a voltage offset so you can do this with JAW. The other thing you can do is datalog several things...Heat of the sensor, AFR, RPM, TPS volts, and MAP volts. The last 3 items could be any signal from 0-5 volts. The only thing you can't do right now is datalog EGT's. The inventor plans on adding that in the future (maybe). For the price, you can't beat the JAW.

[amcpacer]

That JAW looks pretty good. When you say it simulates the narrowband signal does it mean that it can also shift the lambda in order to make the ECM think the car is running richer than it actually is? How is that simulated narrowband signal programmed?

Their FAQ page does not do a good job describing how the unit is able to offset the narrowband signal.

I just might buy this setup at some point.

[Tbone]

amcpacer: Your right about the JAW site not explaining the software very well. It is easy to understand once you work with the software. Also, I have asked a bunch of questions on the JAW forum.

The JAW will shift the Lamda or AFR (readout is in either, you select) by any amount that you want. You basically type in the voltage you want 14.7 AFR to equal. Normally that would be 0.353 volts. There is a column for AFR, Lambda, Voltage out 1 and Vout2. Each column has about 66 rows. If you want your AFR to be lean, say 16:1, look at the column for AFR and find the row for 16. Scroll over to the Vout2 column (you can use vout1 or vout2 for simulated narrowband signal but only vout2 is buffered so that is prefferred). Read the voltage. It says 0.101 volts. Take that number and enter it into the text box labelled voltage Out Interpolation. That will be your new target for your ECU to aim for. Next you hit the Vout Inter button and it will re-write the column for Vout2 so that the voltages are offset by your new target value. Your ECU always tries to achieve 14.7:1 AFR. Now it will consistently hit 16:1 AFR and the ECU will not know the difference. You do the same thing for richer mixtures as well. Finally, you have to press a button called "download Vout to JAW". Now your JAW will have the new values for Vout2. The only bad thing about running your car like this is that it will always run lean (or rich depending on how you setup Vout2). It won't change AFR depending on RPM or MAP volts or TPS. That would be more like a custom calibration. One thing I would like to try is to switch between my wideband O2 sensor and my narrowband O2 sensor. That way I could run lean when cruising and run "normal" when accelerating hard. I would just need a double throw switch and maybe an automated switching point based on TPS or MAP volts.

[speeduphoria]

Quote:

Originally Posted by Tbone Nice display, speeuphoria! What brand do you have?

Mine is Innovate, thats the LogWorks3, it was actually just released, but I've been using the beta version for a little while now