FJRFencer,Did you ever get your surge problem resolved? Was it a bad ECU, or just the swap out to the new software that reads the sensors with less throttle input?
I Literally just walked in the door from getting it done at D&H.
First D&H Is fantastic. They messed with my bike for about 2 hours end = no charge.
Nick road my bike, said he felt what I was describing. They tried to read the CO settings but could not get it to come up in diag mode. (do you have to do the Barbarian Jumper mod to READ CO setting?) He pulled out the Yamaha manual and it said to disconnect the fuel pump to read the CO settings. He could not get a reading from either the original or new ECU.
He DID say that Yamaha says to leave the CO settings alone and adjust the bike to work with what was programed from the factory- not the otherway around. I really wish we could have compared CO settings
They swapped back to the orig ECU and we both took it for a ride. The rides felt ALMOST identical. 1st & 2nd gears both had a very similar feel both of us. but with the Orig ECU, 3rd was smooth to me.
n0stress and I swapped bikes shortly after I had this done. He had his ECU swapped on the same day I had mine done, but at a diff dealer. So riding his 07 with a new ECU and my 06 with a new ECU, both felt the same. He also felt was I was talking about, hadn't noticed it before, but noted he hadn't really ridden like that before. you have to make it do it.
Short summary, my Butt-o-meter, was prob sensitive, after the swap an I noted something that was there all along but had not made a note of in my head. I put the new ECU back in under the warranty swap and rode out.
New ECUs ok to swap.
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Admins you can update the title to reflect new ECUs ok and/or close this thread