By now it is common practice in the industry to reflash the OEM ECU to remove various EPA mandated restrictions and other functions that hinder performance. the Gen 4 ZX-10R ECU's respond exceptionally well to this reflash offering gains of up to 25 additional horsepower. You simply send them your ECU, they flash it with a new code and send it back to you.
There are lots of companies doing this reflash service, but they are not all created equal.
I purchased my bike used with just over 2000 miles on it and the previous owner had used a company called ECU Unleashed to perform the reflash. While I am not dissatisfied with the performance of the ECU I would not personally use them again in the future.
previous owner of my bike used ECU Unleashed to flash the
Gen4 ECU there is no detail on the options that could
have been flashed at that time. My actual need for
information from them centered around the Exhaust Servo
motor which still rotates during the diagnostic loop of
the start-up sequence. This leads me to believe that if I
disconnect it then I will probably throw a code. I simply
wanted to be able to contact ECU Unleashed to verify how
this is handled with their flash.
UPDATE: My persistence in trying to contact them via email did eventually pay off kinda... I contacted them on May 7th and we had 3 volleys of correspondence. Exactly 2 weeks later I received another correspondence from them. I replied and then 11 days later they replied again telling me
your original email to our techs and they informed me
that unfortunately the exhaust servo removal (including
the code) is a feature that is unavailable on Mitsubishi
ECU's (used in the ZX-10's).
This seems entirely contradictory to me since every other company I have talked to has told me they can remove the requirement of the exhaust servo motor with their custom reflash. So again based on the latency in communication and the seemingly inaccurate responses from them I would recommend just about any other big name reflashing service over the ECU Unleashed service. Ultimately I spent an additional $60 on a servo motor delete gizmo that plugs into the the harness and tricks the ECU into thinking the servo motor is still there.
Your mileage may vary
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