![]() ![]() Later, I played between these two ECUs and noticed what the original Yamaha factory's flash is much stronger in terms of power response, maybe a little bit more brutal but this only plays for better bike charisma instead of having anemic, lagging but the smooth engine. This is why I ordered another original used ECU from eBay, replaced re-flashed one and all problems are gone the same day. Basically, they refused to re-flash ECU back to OEM flash and credit back my money in a first my request month later after order. ![]() I send an email to 2WDW they said the described problem is with my MAF and O2 sensors. The second was when someone started to change its line towards my place in traffic and I have to speed up, these two seconds can cost me a life. First when the bike has the lag in the middle of exit from the round highway merge section. The biggest issue I noticed a couple of weeks later, the bike after ref-lashing got dangerous lags in power between 3.5K RPM to 5K RPMs (which is my normal commuting RPMs). They refuse to return fan T range settings without returning deceleration cut. The fan started kick-in and out every couple minutes while I was standing between traffic lights. After some real-world riding, I realized there are some issues pop up after ECU re-flashing, it was summertime and because 2WDW lowered kicks-in temperature of a cooling fan, my bike became totally uncomfortable to ride in heavy stop-an-go-traffic, my legs start to melt and fries. Fist ride - "Oh man, it is buttery smooth!". I was excited waiting for freshly re-programmed ECU. I sent my 2015 FZ-07 ECU to "2 Wheel Dynoworks Inc". But just for example, we've seen 2 versions of the ECU software and 4 different ECU models so far.2 WDW cares only about getting money and will screw you if you are complaining. We just made some important improvements to the flash this weekend so I'll probably start updating everyone to our V4 shortly. So we continue to work on it to eliminate more issues and the flash gets better and better, smoother and smoother, and we get less issues with different bikes. Sometimes it does things we can't explain because we can't see the whole picture, and also because every bike is a little different. I think we've updated 17 or 18 different fuel/parameter maps in the software so far. With the OEM ECU, we only see part of the picture and we rewrite it and test until we get the results we want. It isn't concise like the race ECU we also run, were we have built all of the maps from the ground up, so we know exactly how it will behave. As Chris at Flashtune cracks more of the code, more options, variables, and maps become available for us to play with. The OEM ECU software is very complex and we don't have access to all of it. But just for example, we've seen 2 versions of the ECU software and 4 different ECU models so far. ![]() Click to expand.It's more complicated than that. ![]()
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