There are many other options available when flashing the ECU including: not all features are available with each flash, see each flash page for what is available
Disabling the exup valve. The exup valve is a butterfly valve that is in the exhaust. Yamaha markets them as a midrange power enhancer. This is no longer true. When the exup valve was first used on the FZR1000 and on the early R1's it was true. Since 2004 with the R1, since its introduction on the R6 in 2006, and since the 2006 FZ1 it actually hurts low and buttom end power. It is strictly a way to get the bikes through noise emmisions. With the exup valve disabled you can remove it from the bike and it will not show an error code, nothing else to buy. You can also leave it on the bike as it will stay in the open position except on start up when it will still go through its normal open/close cycle.
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Disabling the exup valve. The exup valve is a butterfly valve that is in the exhaust. Yamaha markets them as a midrange power enhancer. This is no longer true. When the exup valve was first used on the FZR1000 and on the early R1's it was true. Since 2004 with the R1, since its introduction on the R6 in 2006, and since the 2006 FZ1 it actually hurts low and buttom end power. It is strictly a way to get the bikes through noise emmisions. With the exup valve disabled you can remove it from the bike and it will not show an error code, nothing else to buy. You can also leave it on the bike as it will stay in the open position except on start up when it will still go through its normal open/close cycle.
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Disabling the o2 sensor. When the o2 sensor is active(small throttle openings and lower rpm's) the fuel injection uses the signal it sends out to keep the air/fuel ration in a narrow band. Usually around 14.5 to one. On some bikes like the fz09 this causes a bump in the throttle and surging as the bike switches back and forth between closed loop( o2 sensor active) and open loop.(o2 sensor inactive). Disabling the o2 sensor allows me to control the fueling through all throttle positions across all rpm's and makes for a much smoother throttle. I recommend disabling it where ever it is available.
fan temps adjustment: On most bikes yamaha waits till around 216 degrees to turn the fans on. I recommend for the R1, R6, and FZ09 to turn them on at 195 and off at 185. For the FZ1, recommend using 205/195. At these temperature settings the fans should never come on when you are moving but will come on shortly after comng to a stop. Not only does this make the bike more comfortable to ride it also keeps your motor cooler which should help extend longevity.
Speedometer correction: ( this is only available on a few older models) Most motorcycles have a 3-5% factory error built into them. Change sprockets and this error can become very large. This is ticket waiting to happen, not knowing your actual speed. This will also add more miles on the odometer then you have actually ridden. You can tell me the sprockets you have on your bike and I will correct the speedometer back to factory error.
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Disabling the AIS valve: The AIS valve injects clean air from the air box into the exhaust port. This is purely to clean up emissions and does not effect performance in any way. Disabling the AIS accomplishes two things. It reduces popping on deceleration after installing an aftermarket exhaust and allows the exhaust to be analyzed for tuning reasons. I have found that many AIS valves still leak a bit even when disabled. For this reason I still install block off plates when measuring the exhaust for tuning to ensure complete accuracy or if I want minimal popping. I also receive a lot of e mails 6 months to a year after I flash a customers ECU saying the bike has started to pop on decal and does it need a reflash? This is a sign that the valve has started to leak. A flash can not change over time so any time you have a change down the road it is not in the flash it is something on the bike changed. Most likely a leak at the AIS system or at the exhaust if it starts popping. Lastly crackles and small pops on deceleration are normal after installing an aftermarket exhaust . There should not be large loud continuous popping but crackles with an occasional mild pop is normal.
Disabling Injector Decel cut: With the injector decel cut active when you close the throttle the injectors shut completely off. Rolling the gas back on results in a delay and then a bump as the injectors turn back on. Disabling it smooths out on/off throttle response at slow speeds.
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Enable quick shifting: Enabling this feature allows you at any time in the future to add a dyno jet style normally open, quick shift sensor. The sensor is installed with one wire to a specific pin on the ECU and the other wire to ground. When the sensor is activated the ECU cuts the ignition for a set time allowing full throttle, clutchless upshifts. If you never utilize the feature there is still no reason not to enable it with the flash. See the video below for helpful tips when installing a quick shift sensor. Use the chart to the right to determine what type of sensor you need and what pin of the ECU to connect it to.
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