Have any of you use AFR’s to set your bikes up.

We use Wideband 02 sensors on a daily basis, when we tune the cars we build, and I just wondered if you guy’s have played with them at all???

He is a link to a company in Australia who do some nice bit of kit and small too…. Have a look


Wide band controller Single Channel
http://wbo2.com/2c0/default.htm
Wide band controller Dual Channel
http://wbo2.com/3h1/default.htm

Display Unit
http://wbo2.com/lx1/guide.htm

The Bosch Sensors they use are a little big for our exhausts I feel, but I think this is the way to go when tuning our bikes.

Real time WB02 would PREVENT a lot of expensive seizures too and would pay for itself in no time i believe...

Comments and ideas guys!!!!

Cheers Rob

If you can get a sensor small enough to sit in the downpipe of each expansion chamber without disrupting gas flow, then it could certainly be an interesting and probably useful setup tool.

EGT's have been used a lot (Matt@TYGA has twin ETG's on his 300) to aid 2-stroke setup, but these look a lot more comprehensive. The displayable information is excellent.

Of course, someone would need to provide a safe baseline setting to enable quick setup, and ideally you want a destructive test to see how far (and how accurately) the system can be pushed! Volunteers?!
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Hi Andy,

I fully intend to go down this route.

We use EGT and AFR’s we we tune the Mitsubishi GTO TT’s we build to stunning effect and the speed in which we can set them up is amazing.

Of course we use laptops and Fuel Injection, but the principles are the same and we just need to get some data together and workon some base settings.

The sensors that they used on the old 500 GP bikes were very small and also they placed in the tail pipes as this was the optimum place to put them.

I will see what I can dig up and hopefully this post will bear some fruit and we can all then benefit from it.


Cheers Rob

Doesn't take long for the sensor to get juiced up from a stinky two stroke dribbling oil everywhere.

Tried AFR sensors and I'll stick with my EGT sensors. A doddle to use, not affected by stinky, oily strokers and enable fast set up.

A complany called INOVATE make an after market AFR meter.
We use them to check AFR on cars when bolting on big turbos and upping boost or installing new computers to make sure they are safe to drive to the dyno to be tuned on the rollers


These work the same a std dyno AFR. A sensor that is screwed in a 1" pipe that is clamped into the end of the exh pipe.
Plugged into a lap top you get real time graphs. Can play back and save ect

We usually clamp it in, run the cable into the car, and head to the highway and tune on the run

But on a 2-stoke, yeah, can get a bit gummed up with oil.

http://www.rocketindustries.com.au/search.php?brand=Innovate&menu=Tools+%26amp%3B+Shop+Equip.

This is the AUST supplier for them.
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Remember one thing though, with either method. YOU are in control.

An AFR sensor will tell you the ratio, but what ratio is best for your bike? You need to know this and adjust accordingly.

Same deal with the EGT sensor. Know the peak temperature, know where on the climb it is at it's best and adjust accordingly.