I'd start with map 5 and tune the fuel trim screws to 667 as a baseline.
Vortex ecu settings
So I have a 22 yfz450r with Athena 478 big bore ,Carillo 12.75:1 compression, full dasa exhaust ama edition, fci with airbox, ais delete, oil breather box mod, gt thunder air idle adjuster. There isn’t any place that I’m from who dyno tunes on vortex software they all mostly use dyno jet. Was wondering what would be the best setting to run since I like trail riding a lot and don’t wanna to wait till I find someone who can dyno tune but also don’t wanna to run super lean where my bike seizes since I’m in AZ weather and it’s pretty hot out here.
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Sounds like a trial and error situation. It's best to start rich with the settings, see how it runs, and progressively get lean until it runs best. You can also check the plug as an indication of how it's running. Look for a light chocolate brown color.
I came across a YouTube vid from limitless Powersports. They were fixing a 478 big bored yfz with just full exhaust and no lid and they dialed it in with map 1 3-3-5. I think I’m going to start around those numbers and see if it runs lean or rich and go from there. I don’t know if elevation plays a big part since it’s fuel injected but I will come back and post what setting best work for me just waiting on the vortex to come in since I ordered it on Tokyomods and heard they take forever to ship them. Thanks tho guys !
Elevation always play a part because of the difference in density altitude.
We’ll I’m just waiting on my 47mm rp throttle body to come in and I’ll start tuning it, stock throttle body is sh*t been having problems with it 6 months after I got the yfz.Elevation always play a part because of the difference in density altitude.
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