Dynojet wideband installed *pics*

[HwyCruiser]

I finished up installing the Dynojet Wideband Commander a few days ago and I've been getting familiar with all its features. I installed as many of the optional signals as I could, less the programmable relay (useful as a nitrous trigger :hmmm:) and data acquisition outputs.

I had intentions of doing a thorough write-up on the installation, but the instructions that came with the kit are done pretty well. Here's a link to the install guide if you want to take a look-see:

Dynojet WBC Install Guide (http://www.widebandcommander.com/pdf/WBCInstallGuide.pdf)

I've posted several pictures below to show the particulars of my installation (click on the thumbs to enlarge). I spend quite a bit of time figuring out how I wanted to route the wiring and I think it turned out pretty clean.

I already had a bung welded onto the driver's side exhaust pipe before the cat (I'm running DR's cobra manifold / x-pipe kit), but the WBC kit comes with a stainless steel bung and plug that you can get installed at your local muffler shop for a nominal fee.

http://i12.photobucket.com/albums/a203/jdomino/wbc/th_WBC_o2install.jpg (http://i12.photobucket.com/albums/a203/jdomino/wbc/WBC_o2install.jpg)

Here are some pics of how I routed the O2 sensor wiring up into the passenger compartment through an existing rubber drain plug under the driver's foot well carpet, over the transmission hump, behind the center console gauge pod to the WBC module located under the dash on the passenger side. There is also a 3-conductor 18-gauge wire run to the engine bay along the emergency parking brake cable in wire loom for the optional analog signals (more on this later).

http://i12.photobucket.com/albums/a203/jdomino/wbc/th_WBC_extharness.jpg (http://i12.photobucket.com/albums/a203/jdomino/wbc/WBC_extharness.jpg) http://i12.photobucket.com/albums/a203/jdomino/wbc/th_WBC_intharness.jpg (http://i12.photobucket.com/albums/a203/jdomino/wbc/WBC_intharness.jpg) http://i12.photobucket.com/albums/a203/jdomino/wbc/th_WBC_intcontrol.jpg (http://i12.photobucket.com/albums/a203/jdomino/wbc/WBC_intcontrol.jpg) http://i12.photobucket.com/albums/a203/jdomino/wbc/th_WBC_mounted.jpg (http://i12.photobucket.com/albums/a203/jdomino/wbc/WBC_mounted.jpg)

The last pic above shows the final mounting position of the WBC module, where all the wires home-run to, using the supplied Velcro strips. I wire-tied all the cables together after I was done wiring everything up an stuffed them in the area behind the gauge pod. Just remember you will want to have easy access to the module to download logged data via the USB cable to a laptop if you use these features.

I picked up power for the WBC module and data logging trigger switch at the interior fuse box. The power to circuit #6 and 8 is powered with 12V when the key is in the "on" position, so I used a mini-fuse tap to grab the powered side of the #6 fuse to an external in-line mini-fuse holder.

http://i12.photobucket.com/albums/a203/jdomino/wbc/th_WBC_fbwiring.jpg (http://i12.photobucket.com/albums/a203/jdomino/wbc/WBC_fbwiring.jpg) http://i12.photobucket.com/albums/a203/jdomino/wbc/th_WBC_fusebox.jpg (http://i12.photobucket.com/albums/a203/jdomino/wbc/WBC_fusebox.jpg)

Here's is a pic of the light data logging trigger switch I mounted on the center console gauge pod:

http://i12.photobucket.com/albums/a203/jdomino/wbc/th_WBC_trigger.jpg (http://i12.photobucket.com/albums/a203/jdomino/wbc/WBC_trigger.jpg)

Here's a pic of the AFR gauge supplied as part of the WBC kit. I mounted it in an Autometer a-pillar gauge pod and picked up the blue bulb covers to try and match the OEM gauges. Notice that the gauge has "AUTO METER" stenciled in tiny letters on the bottom of the face.

http://s12.photobucket.com/albums/a203/jdomino/wbc/th_WBC_gauge.jpg (http://s12.photobucket.com/albums/a203/jdomino/wbc/WBC_gauge.jpg)

You can also see the red LED at the bottom of the gauge that can be programmed to go on or off according to the signals monitored by the WBC module. I have it programmed to light whenever the AFR drops below 11.7, so I can see from the corner of my eye there the engine is getting plenty of gas during WOT. I grabbed the dimmable light circuit off the center console gauge pod and put a blue Autometer bulb filter on the AFR gauge to get it to somewhat match the existing gauges.

So far I am really impressed with the "feature-richness" of the WBC kit. You can install just the O2 sensor, module and gauge to get real time data visually or you can go whole-hog like I did and hook up the other bells and whistles. I've already used the data to richen up the WOT fuel a little through my Predator hand-held programmer, so it has already proven its value to me as a nice diagnostic tool.

[HwyCruiser]

As I mentioned previously, I wired the optional input signals (monitoring RPM, MAF volts and throttle position) to get a better picture of what the engine is doing when I data log AFR. The 3-conductor I ran along with the O2 sensor cable runs up into the driver's side of the engine compartment and then the wires head in three different directions from there.

Here's a pic of the RPM hookup wire, where I tapped into the #4 coil pack switched wire at the firewall harness (pin #3):

http://s12.photobucket.com/albums/a203/jdomino/wbc/th_WBC_coprpm.jpg (http://s12.photobucket.com/albums/a203/jdomino/wbc/WBC_coprpm.jpg)

I had to set up the RPM divisor to 1 and left the sensitivity to high in the device setup via WBC software on the laptop.

Here's a pic of the MAF voltage output hookup wire (pin 'D') on the FIT 90mm MAF (should be the same pin on the stock MAF):

http://s12.photobucket.com/albums/a203/jdomino/wbc/th_WBC_mafv.jpg (http://s12.photobucket.com/albums/a203/jdomino/wbc/WBC_mafv.jpg)

I wired the MAF volts as analog #1 and enabled the MAF function via the WBC software.

And here's a pic of the throttle position hookup wire (center pin):

http://s12.photobucket.com/albums/a203/jdomino/wbc/th_WBC_tps.jpg (http://s12.photobucket.com/albums/a203/jdomino/wbc/WBC_tps.jpg)

I wired the throttle position signal as analog #2 and enabled the TP function via the WBC software. There is a quick off-pedal / wide-open pedal setup in the software also so it displays %TP correctly.

I used the wire tap / quick disconnect terminals supplied in the WBC kit to get the system started up and proven. I'll eventually go back and solder on the hookup wires, but I took some time and put the hookup wires in loom for a clean installation.

Below are some screen snapshots of the WBC software in action. First is a WOT run in second gear downloaded from the module's internal memory and replayed on the laptop, and the second is real time data with the laptop connected.

http://i12.photobucket.com/albums/a203/jdomino/wbc/th_WBC_session.jpg (http://i12.photobucket.com/albums/a203/jdomino/wbc/WBC_session.jpg) http://i12.photobucket.com/albums/a203/jdomino/wbc/th_WBC_live.jpg (http://i12.photobucket.com/albums/a203/jdomino/wbc/WBC_live.jpg)

Note on the first pic only MAFV is displayed since the module only logs analog #1 when data logging to internal memory, where in the second pic TP is also displayed when streaming live data. You can also record the real time data but the sampling time is supposed to be a little slower. The module samples 10 times a second when data logging to internal memory, with multiple logs stored in memory up to 10 minutes in total. The good thing is the analogs can be fairly easily swapped via cabling if you want to monitor something in particular.

Although there isn't a user's manual to explain the WBC software, it becomes pretty self-explanatory once you start poking around the menus - which most are disabled until you plug in the laptop and the module is powered up.

Well that was a long one :coffee:, but feel free to ask about any of the details I might have left out.

[Bradley G]

Nice setup !
Great post.

[Raudermaster]

Looks awesome, I wanted to do something like that.

[Zack]

How did you measure your ground offsets from the O2 sensor back to the computer?
I had the LC unit connected to my XCal2 a while back and canned it all cause the ground offset calculation is so critical and easy to fudge.
Ive been learning that high horsepower cars need the adaptive learning turned OFF after a dyno tune so that no parameters will ever change, mainly A/F.

[ckadiddle]

Geez that sounds like a LOT of work on the install. Very clean!

[TooManyFords]

How did you measure your ground offsets from the O2 sensor back to the computer?
I had the LC unit connected to my XCal2 a while back and canned it all cause the ground offset calculation is so critical and easy to fudge.
Ive been learning that high horsepower cars need the adaptive learning turned OFF after a dyno tune so that no parameters will ever change, mainly A/F.

Adaptive learning, my understanding of it anyway, only applies to the closed loop settings. Once you go open loop, it is all table based and cannot be modified by the adaptive learning. The cool thing is that you can tell it at what load to go open loop and start using tables.

But I've been known to be wrong before (I think...) and I'll run this by the SCT ProRacer forum just to be sure.

JD: Nice writeup and nice wiring job. You do as good a work on your own as you did on my car a few weeks ago.
:thumbsup:

Can't wait to get mine purchased and wiried in.

John

[Loco1234]

Nice Very Nice....
I want one....
LOL

Interested to here the conclusion of Zacks commetns and questions though...

[HwyCruiser]

How did you measure your ground offsets from the O2 sensor back to the computer?
I had the LC unit connected to my XCal2 a while back and canned it all cause the ground offset calculation is so critical and easy to fudge.
Ive been learning that high horsepower cars need the adaptive learning turned OFF after a dyno tune so that no parameters will ever change, mainly A/F.

The WBC has two grounds, one for the 12V power and a "digital ground". There's a tech tip on their website about running the digital ground to the sensor reference if the reading is unstable (regarding TPS in particular). Right now I've got them both referenced to the vehicle ground. I wonder if this was a problem with the XCal voltage reference and not your LC.

Anyway, since I've got the Predator to log MAFV vs. rpm and the WBC to log AFR vs. rpm, monitoring MAFV with the WBC is pretty much redundant. And in reality, I'm not doing any precise tuning with my hand-held because you can only adjust WOT fuel in two rpm ranges (2-4k and 4-7k). Anything else is going to have to run through my tuner in Springfield. The air transfer funtion was dialed in on the dyno last year and the AFR line still looks to be pretty stable - it was just running a tad lean, probably due to recent email modifications to the tune.

Now that I've thought little more about what I need the kit to do for me, I'm going move the TPS to analog #1 for internal logging and warning light conditioning, and run a GM 3 bar MAP sensor to analog #2 for realtime logging of boost. Anything else can be logged on the Predator and jived up with rpm. Yay toys!

[HwyCruiser]

Adaptive learning, my understanding of it anyway, only applies to the closed loop settings. Once you go open loop, it is all table based and cannot be modified by the adaptive learning. The cool thing is that you can tell it at what load to go open loop and start using tables.

But I've been known to be wrong before (I think...) and I'll run this by the SCT ProRacer forum just to be sure.

JD: Nice writeup and nice wiring job. You do as good a work on your own as you did on my car a few weeks ago.
:thumbsup:

Can't wait to get mine purchased and wiried in.

John

That's my understanding of how the Diablo tune works also. Dial in the air-transfer function and your good to go (unless you run out of MAF, then there are workarounds - some good, some not so much). WOT fuel can also be grossly adjusted to bump the AFR line up or down on the Predator handheld. I'm not sure what you have access to on the XCal, but since you've got the ProRacer package you should be good to go.

The installation is probably a half-day job, depending on how many breaks you take (and you know I take lots of breaks). Hopefully my pics will make it a little easier.

[HwyCruiser]

Just wanted to post a follow-up regarding an issue I was had with the gauge operation. It would intermittently freeze where it was until the power to the module was cycled. Initially I thought it was an issue with the smoothing function in the setup software, but after I tapped on the gauge it would start working again for awhile. Obviously something was wrong internally to the gauge since all the module's datalogging features and gauge's warning light still worked.

I emailed their tech support regarding the issue and their warranty manager had me send just the gauge back, which was easily removed since it's a quick connect to the module's main harness. They tested it and sent me a new replacement gauge back the same day they received it. I put it in today and it works fine. Kudos to the guys at Dynojet for the stand-up way they handled the warranty claim. FYI, I you get one, just make sure you don't hack up the supplied connectors or harnesses - which thankfully I didn't do (I thought about it, but I didn't do it) - or you're on your own as far as warranty issues are concerned.

Aside from the gauge problem, since it was quickly handled no questions asked, I've been really impressed with this setup. I'm always afraid of finding out something like this is going to turn out kind of hoaky or the after the sale support doesn't turn out as promised. After using this setup for a couple of weeks I'd recommend it to anyone out there looking for a wideband o2 kit with a bunch of useful features to it right out of the box.

[Power Surge]

Adaptive learning, my understanding of it anyway, only applies to the closed loop settings. Once you go open loop, it is all table based and cannot be modified by the adaptive learning. The cool thing is that you can tell it at what load to go open loop and start using tables.

But I've been known to be wrong before (I think...) and I'll run this by the SCT ProRacer forum just to be sure.

JD: Nice writeup and nice wiring job. You do as good a work on your own as you did on my car a few weeks ago.
:thumbsup:

Can't wait to get mine purchased and wiried in.

John

To chime in on this...

The car does in fact go open loop at WOT, however adaptive DOES factor into your A/F still. The open loop tables work on top of your long term adjusted fuel trims. So if you have an issuse in closed loop (air leak, exhuast leak, bad O2, etc), it will affect your WOT A/F ratio. For track type cars and race tunes, the adaptive learning should be shut off, to make the car more consistant and keep it sticking closely to the adjusted OL stuff.