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Zt-3 is the single wide band controller
Zt-4 is the dual wide band controller
Woolich used the 3 with a piggybacked rj-11 cable into the log box. Check with Woolich if you can use the 4 with their system. Shouldn’t be an issue but it might be. The zt-3 boxes are specified for specific cylinders (at least on the V2) bu a red tag on the RJ cable
 
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Have been doing a lot of studying and prep on the Woolich today, I don’t want to tackle tuning an ECU, even using an auto tune function without figuring out what I don’t know.

I will say this, so far these Woolich guys seems top notch on the support side of things, and have been very patient and responsive to all my noob questions.

Still waiting on an answer about only getting one wide band O2 sensor in the box, I have two power cables to them but one sensor.

I was peaking under the fairing without removing it and didn’t see where the Akra has a second O2 sensor. Was hoping the Akra had wide band O2 bungs and sensors already on it but at least the one O2 sensor in the rear is narrow.

Not a huge issue, I just ordered an adapter, but won’t get to tune it this weekend until I get the narrow to wide band bung adapter.

I was going to just wait to install the Woolich setup until after the new Spark exhaust gets here, (They told me it comes with wide band O2 bungs installed. But I kinda at least want to get some logs with the full Ti Akra on there so so can compare those logs to what we get when the Spark is on there and see what at where the differences are on the tables if any.

That would be useful info for anyone interested in the Spark system, and I’m curious.
 
Ok I’m dumb, how do you accurately tune a 4 cylinder bike without taking individual readings off each cylinder?
 
Alkhater said:
Most of the time people find it accurate enough to take readings off each cylinder bank.


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Click to expand...

Yeah but I can’t even do that with one O2 sensor in the kit.

Either they mid packaged my kit and it’s missing an O2 sensor, or they must-labeled it in saying it’s ‘all you need’.

We’ll see tomorrow, they’ve been good about getting back to me.
 
craig bush said:
Or even a single sensor in the muffler of a 4 into 1 system (from what I’ve seen). Similar in the automotive community as well - it’s rare to see someone tune individual cylinders.
Click to expand...

I remember in the good old days (circa 2008) when I had an S2R1000 air cooled monster, I bought some kind of contraption to "balance the cylinders"

Has humanity evolved beyond that by now? I haven't thought about it or had to do it to any bike since then so I am assuming we are more civilized now.
 
craig bush said:
Or even a single sensor in the muffler of a 4 into 1 system (from what I’ve seen). Similar in the automotive community as well - it’s rare to see someone tune individual cylinders.
Click to expand...

Yup. Individual cylinder tuning is usually applied in Motorsport/professional level applications. In the car community 1 O2 sensor is enough to get a car to 95% of where it needs to be tune wise.


Sent from my iPhone using Tapatalk
 
TomFoolery said:
I remember in the good old days (circa 2008) when I had an S2R1000 air cooled monster, I bought some kind of contraption to "balance the cylinders"

Has humanity evolved beyond that by now? I haven't thought about it or had to do it to any bike since then so I am assuming we are more civilized now.
Click to expand...

I’m no tuner but to my understanding, one wideband in the muffler allows tuning the 3-D fuel map based on AFR. Some cracked ecu’s and I think some piggyback tuners (Power commander, Bazzaz, etc…) allow editing the timing and TP maps as well. With a stand-alone aftermarket ecu, you can obviously change anything you want, including tuning individual cylinders.
 
Interesting. They made a good case on the V2 for cylinder balancing due to geometrical differences in the L configuration. I remember going through the Woolich maps and looking at the two then going through the Marelli software and seeing what was logged in that. Every piston powered airplane I have flown or owned also has EGT for each cylinder and the FI airplanes allow you to adjust A/F in each cylinder to synchronize egt. Seems like a single sensor on a 4 cylinder is a bit of a step back but I guess it works. Thanks for the info
 
Steven31371 said:
I was peaking under the fairing without removing it and didn’t see where the Akra has a second O2 sensor. Was hoping the Akra had wide band O2 bungs and sensors already on it but at least the one O2 sensor in the rear is narrow.
Click to expand...

If you remove the lower left side fairing you'll see it. Its next to the starter motor. Both are narrow bungs unfortunately.
 
endodoc said:
Zt-3 is the single wide band controller
Zt-4 is the dual wide band controller
Woolich used the 3 with a piggybacked rj-11 cable into the log box. Check with Woolich if you can use the 4 with their system. Shouldn’t be an issue but it might be. The zt-3 boxes are specified for specific cylinders (at least on the V2) bu a red tag on the RJ cable
Click to expand...

I wonder if Woolich's listing just has a typo. They list it as the "Zeitronix ZT-3 Wideband O2 Controller" and as "Dual Zeitronix ZT-3," the latter of which, Dual Zeitronix, is a designation for the ZT-4.

http://www.zeitronix.com/installation/Zt-3 Instructions.pdf
http://zeitronix.com/installation/Zt-4_Instructions.pdf
I'm ok with just doing the rear bank since that sensor would be easy to access for a dyno tuning run.
 

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