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An engine's power is dependent on how well the air / fuel mixture is ignited in the cylinder. Air / fuel ratio (AFR) is controlled by the engine control unit (ECU). Bazzaz fuel controllers piggy back onto the Engine Control Unit (ECU), intercepting the signal sent to the fuel injectors and changing it. The precise data for these changes are stored in the Z-Fi Fuel Controller in the form of a fuel map. The Z-Fi comes pre-programmed with an enhanced fuel map for power gains and improved throttle response. With a proper fuel map the rider can expect a smoother and more responsive throttle along with horsepower and torque gains.
Motorcycles with any modifications (such as exhaust or high-flow filters) must have fuel tuned to accommodate the change in air to the AFR.
Bazzaz Z-Mapper software makes it easy to view and easily adjust fuel maps
Load and save fuel maps that are downloaded, manually edited, created on a dyno, or made with the Z-AFM air / fuel self mapper
1. Buy the Bazzaz device
2. Get a dyno tuned map for your bike.
3. Ask yourself why you didn't do this sooner?
The throttle response is smooth and the hesitation is gone. I suggest a custom dyno tune VS a generic map. It is money well-spent in my opinion.
I was running the "competitors" Fuel Controller and would choose Bazzaz again. The software is easy to understand and the device is made of better quality.
I have the Map Switch and AFM... I like the idea of creating and having Two maps to switch on the fly.
My ECU is flashed, but I recommend keeping the Fuel Controller to make changes without paying for another ECU Flash.
Graves Full Exhaust and BMC AF.
March 25, 2014
Have a functionality, fit, or otherwise product-specific question about the Bazzaz Z-Fi Fuel Controller Yamaha R6 2008-2015? Ask it here!
If you have a customer service or shipping question, please direct it to our Customer Service department.
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A shopper asked:I have an odd question. I currently have an SV 650 that I use strictly for track day use. I am looking at an R6 and I was wondering if this item (the fuel controller) can be used to soften (detune) the motor for just starting out with it on the track and especially in the rain?
I started late in life riding at the track (44) and I bought a Ninja 250, then the 300 and now the SV 650 to properly learn to ride well and fast.
I figured instead of spending the big bucks on the Kawi 636 with its traction control and power level systems, I would just modify an R6 which is what I really want and add the bells and whistles to it?
The R6 is an amazing bike with arguable the best chassis available, and is currently my first choice of track bike.
One of the main advantages of a module like the Bazzaz unit is the ability to modify the fuel map. That means that you can choose to run the bike leaner or richer at any given operating point, and smooth out the torque response. I suspect that this smoothing of the torque response at small throttle openings is part of what you mean by "softening" the motor. Tuning the motor to pick up torque gently and smoothly at low throttle openings is something that race teams put a great deal of effort into, as it allows riders to pick up the throttle earlier and start accelerating sooner. That is a real improvement that becomes possible with the Bazzaz unit. If you mean reducing top end power (what you would use after the corner as you get onto the straight), then I would argue that your right hand would be able to take care of that just fine without altering a fuel map.
The simplest way to reduce top end power would be to short-shift the R6 and run a gear up from where you would normally want to run the bike. This would keep you out of the powerband (ie below 10k RPM) and reduce the chances of wheel spin.
The next option may be to use the R6 geared a bit tall (more hypothetical top speed if you have the power, but less acceleration and less tendency to spin the wheel). Typically you want to gear track bikes shorter in order to get better drive out of the corners because most track use does not get anywhere near the top speed of the bike. When it is geared shorter, you increase the torque at the rear wheel and increase the chance of rear wheel spin.
The most extreme option would be to do the 450-triple modifications that have been played with in the AFM class. Search for "attack of the cripple triple" or "gsxr-450" to find out more. Those modifications should produce power levels similar to the SV650 with R6 handling.