The AFR map I have created myself, based on this:
- 2 years of riding with carb and with a LC1 / afr gauge on the bike - gives me an idea of "what works" - even if it's most likely not "optimal" (bike was never dynoed, so I dont know if it was optimal)
- Studying several dyno charts from bikes with similar cams/heads to see torque / hp curves / AFR ratios (at wot)
AFR targets:
12 ish on idle / low RPM (I run VE map only under 2500 rpm - no ego correction) Maybe a little rich, but worked with carb.
14 ish on cruise
12,5 at the RPM where similar engine configs make the most power (according to dyno charts for those engines)
12,8 at the RPM where those engines makes the most horsepower.
13-13.5 ish in RPM / load ranges inbetween light cruise and WOT (any advice here?)
I should mention that I run it in autotune now just to get a rough idea of what my VE table should look like. My AFR targets are just guesses, and final tuning of ignition, VE and AFR maps at WOT will be done on a dyno for max power. Cruise values will be set from onroad experience - and based on any good advice for this.
I believe that doing the base maps this way - and with some manual tweaking to get it "close" before I go to dyno - can save me some expensive dyno time
Let me know if I am using the wrong approach here, or if I am on the right track...
(Ideally I should do some logging while riding - but it's not very easy to bring the PC on my bike...)
Knut