Author Topic: TMAX higher throttle position AFR settings  (Read 257 times)

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Offline itsafatboy

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TMAX higher throttle position AFR settings
« on: May 15, 2021, 10:00:48 PM »
So think my fatboy running to fat , i have 116" with TMaX , i have the higher throttle areas running at 12.5 to 12.8 sloping up at the lighter throttle positions , most the maps run at 13.0 ,

so is 13.0 better at WOT just dont want to run to fat to where im just dumping fuel in ,  what is a good WOT AFR setting for like 40% throttle and up

116"
TW9BG
11.3 COMP
Zippers heads 2.0 1.62
boarzilla
Fatboy
low geared like 3.37

Offline rigidthumper

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Re: TMAX higher throttle position AFR settings
« Reply #1 on: May 16, 2021, 09:11:36 AM »
Most of the engine simulators advise 12.5:1 for max horsepower. I've found very little difference in measured HP anywhere from 12.5-13.5, but more heat @ 13.5.
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Offline Thermodyne

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Re: TMAX higher throttle position AFR settings
« Reply #2 on: June 02, 2021, 03:59:45 PM »
Mostly what I see is 12.8 at very light throttle then a lean hump, topping out at 13.8ish.  And then back to 13 flat after 1/2 throttle.

After about 4800 is should be 13 flat across the hole throttle range.