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ECU tune: Screen shot of AFR, ETV and/or F for Bonneville needed

3.8K views 15 replies 5 participants last post by  Dougl1000  
#1 ·
Morning boys & girls - my next video will be on tuning the ECU, which is fine, but I don't know diddly-squat, so I've got to learn myself...

I have TuneECU and have downloaded a lovely map for my 2022 Speedmaster: 31096 I'd like to compare some of the values to a standard tune as, for instance, the air-fuel ratio seems very lean at low revs: 14.5:1. (My Speedmaster can get a bit 'chuggy' at low revs, and it pops and bangs a lot on deceleration.)

If you have a standard Bonnie map (any liquid cooled bike), would you mind doing a screen shot for me? (If the ETV or F tables, just one cylinder will be fine.)

Thanks in advance,

Chris
 
Discussion starter · #2 ·
Well, I just compared the Speedmaster (31096) maps to the Thruxton maps (30035): the AFR there is 14.5 all the way up to 5780 RPM. Perhaps that's not so lean after all? Once again, my ignorance knows no bounds...

Cheers,

Chris