Automatic fuel mapping

[Toast]

http://www.bazzazperformance.com/ind...mart&Itemid=26

Z-Fi AFM Option

The optional Z-AFM kit consists of an air fuel sensor and amplifier box that plugs into the any of the Z-Fi products, and allows for closed-loop tuning of the motorcycle.

Closed loop tuning means that as the user rides the bike, on the track or on a dynamometer, the Z-Fi automatically makes adjustments to the fuel delivery in order to optimize performance. The user has the ability to set a target air fuel ratio, and view the recommended adjustments using the Z-Fi software. The user can choose whether to have the adjustments applied on the fly, as the bike is being ridden, or after the fact once the recommended adjustments have been reviewed.

The Z-AFM kit offers optimal performance without the time or cost of a custom dyno tune. The kit comes with all of the required hardware, but may require modification of the exhaust pipe to accept the air fuel sensor fitting. Many manufacturers, like Yoshimura, make versions of their existing pipes with the sensor fitting already built in.

• Plug and Play installation with any of the Z-Fi products (may require pipe modification to accept sensor)
• Allows for closed-loop self tuning
• Allows for optimal mapping without the time or cost of a custom dyno tune
• User adjustable target air fuel ratio for performance and fuel economy

So no need then to get any custom tuning? Or would some still be required to get the mapping for marginal throttle positions correct and smooth?

[Wheeliemonsta]

Gidday Toast,
This appears to be just a "Flash Harry" O2 sensor...

Looking through the site further you'd need to use one of "there" ECU modules in conjuction with it...

Doe's your bike even run an 02 sensor in the exhaust - I dont think it does...?

I.M.H.O stick with the tried & trued Power Commander

Good robust units with alot of scope for future upgrades (U.S.B PC 3)

Cheers

[imdying]

User adjustable target air fuel ratio for performance and fuel economy

There's the first catch right there.

[vifferman]

... and the second is "closed loop".
My bike runs in closed loop (well... actually, it doesn't now - I've disabled the O2 sensors) only when at low revs and/or constant throttle. You'd be paying some coin for having better running when cruising at moderate speeds. Whoopeee.....
Cheaper just to fit O2 sensor eliminators. Mine cost approximately $0.00 (two 330ohm resistors filched from all the electronica in my son's room...)

[Tints]

Tuning the air fuel ratio to a preset value is one thing, but if you are really wanting top power you need to alter ignition timing as well. This is when you need custom dyno tuning. The air fuel ratio is just the first step.

[bimotabob]

Hi

The bugger is sensors placed in the exhaust system have a short life and are expensive - if the sensors are any good that is (wide band are a must)

Depends what you are looking for too: factory O2 sensors are used for emissions legislation not performance.

Having a correct map programmed (dynoed) for the engine is the best way
to get your bike running properly I believe.

I was surprised to learn recently that Ducati and probably others for racing didn't/don't even use the basic coolant/air temp and map sensors instead use accurate maps based on set figures which they change on the day/race. This is done for reliability.
Obviously that would be a big hassel for a road bike!

Cheers

[imdying]

Tuning the air fuel ratio to a preset value is one thing, but if you are really wanting top power you need to alter ignition timing as well. This is when you need custom dyno tuning. The air fuel ratio is just the first step.

Well not really, bikes tend to have their ignition maps reasonably well tuned for their cam profile/compression ratio/fuel used. Ultimate power might be helped by remapping the ignition, but they're seriously deminishing returns, which is why the PCIII doesn't generally bother with it (i.e. it's an add on box), unless you're into forced induction scenarios. Ultimately you are correct though, it's just not the full story though.

[bimotabob]

Hi

Almost everything is powercommander these days it seems.

However I run this old school system (1995 vintage) for an old school bike
Had to fit the AMB like in the photo as my P7 ECU had no memory cause it's off the ark.
Allows me to change the fuel map (or part of it) while still retaining the factory map, disabling sensors and allows changes to be recalculated into the fuel map as it has RAM for that now.
Also just as good is the ability to diagnose problems as it has fuel pump, igniters and injector tests etc.
Can't change the spark map but can alter max advance for turbo's etc.

Hooks up to even late model Ducati's and Motoguzzi as they still use Magnetti Marelli.

Would have liked to go LINK but the drama's and cost made it a no go.

Cheers