But the blue curve is with Graves exhaust, MWR filter and stacks with the stock ECU maps and settings unaltered. Obviously there is no data for that on the complete bonestock bike since the stock exhaust doesn't have bungs in each header pipe, and the one it does have for the narrow band O2 sensor is too small to fit the wideband sensors in anyway, so I have no AFR data for that, just power curve. First one shows the 3-graph option so that you can see the AFR curves for each cylinder. But I remembered now, so I took the opportunity to do that. On a separate note.for those interested ( G and others), last time when I was tuning with this setup, I did a comparison between a bone stock bike and one that had Graves exhaust, MWR filter and velocity stacks (TST in this case), but I forgot to do a run with the setup as is but with the stock ECU map before flashing. Thanks and I did a search on this and did t find anything pertaining to this interest. I'll most likely have do the ecu flash as I like what they're doing for the N400 community. If this were a car I'd know the answers but by other bike is carbureted and no ecu to speak of so this is why I'm asking. Is that also necessary as it is in the car world where the ecu has to be almost identical?

I also don't know the ecu number on the case if the stock ecu as I'm picking up the bike next week. Im also seeing ecu's with abs and am wondering if that can be used or do I need one specific without abs?

Ive seen many for the '18 to '20 models but nothing for the '21 model for now. So with that being said I have a 2021 N400 without abs and I'm on eBay looking at what's available. This works well on the automotive ecu's and have a stock ecu in the car now while an identical used unit is being flashed by my tuner. The process of looking for a second ecu, used if possible, and keep the original ecu that came with the bike.

11 yamaha fjr1300a ecu flashing