I'll have to think this over, I paid extra for a 5 year warranty... I dont care for how the ECU controls things at present and the Stoltec reflash sounds like it addresses every issue I have with regards to engine/throttle characteristics.from what i've read - yes it will - but the chances of yamaha discovering this is very slim - it's still a risk you'll have to consider.
Regarding ECU removal - read this thread http://www.fz09.org/forum/6-fz-09-general-discussion/1195-how-pull-gas-tank-ecu.html
I have to do this myself but i'm a bit nervous about pulling the tank and what not - I'm a mechanical novice.
Would be good if someone could post some step by step pics on how they did this to get the ECU out...
You do not need to completely remove the tank to remove, or re-install the ECU. I left all of the fuel and vent hoses and any other connections in tact, and just lifted and rotated the tank 90 degrees to the left, and then gently set it on the frame. I then removed the ECU, and once that was out, roughly re-positioned the tank back to the original position, but just let it sit there until the ECU was returned. Reverse the process to install ECU and put the bike back together. It's really pretty simple!Now you have room to undo the fuel line, electrical plug, and vent lines. Be prepared to get a small amount of gas out of the fuel line.
Once these are off, pull the tank straight up and set if somewhere safe!
The hardest part for me was removing the small vent lines since they were stuck pretty well to the tank, but you can use a small flat head screwdriver to help slide them down.
there's a connector for the yamaha diagnostics tool in the tail section.It is not like a car where they plug into the ecu for every service.
There is not a diagnostic port, so the stealership would have to pull the tank and unplug the ecu to even be able to see a change.
I have the flash and consider it very much worth the minor risk.
This, RichBinAZ is a how-to thread demi-godThis is my favorite tank removal how-to: http://www.fz09.org/forum/32-yamaha-fz-09-guides-how-s/1035-tank-removal-throttle-balance.html
Today I added a tip for making your own fuel line disconnect tool: DIY fuel line tool