Thundermax AFR settings
Seasoned HDF Member
Joined: Jul 2008
Posts: 9,282
Likes: 1,139
From: southeast PA
I would first try adjusting the AFRs in your cruising range. In those areas mine is about 13.5, so 13.8 is not that far off. See how that goes and if it runs OK you can try tweaking it a little more.
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Seasoned HDF Member
Joined: Sep 2007
Posts: 9,741
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From: Danbury CT
So I would think 2300-4000 rpms at 20-40% throttle.
Seasoned HDF Member
Joined: Jul 2008
Posts: 9,282
Likes: 1,139
From: southeast PA
That sounds about right, almost the same as my map. My motor is stock except for the stage 1, no cams. Well, I do have cams, just the stockers.
I won't take any credit if this works for you, my map was set up by an TMax expert. I'm at the point where I can go a couple thousand miles before needing to auto map, so it's dialed in pretty good.
I won't take any credit if this works for you, my map was set up by an TMax expert. I'm at the point where I can go a couple thousand miles before needing to auto map, so it's dialed in pretty good.
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Seasoned HDF Member
Joined: Sep 2007
Posts: 9,741
Likes: 1,599
From: Danbury CT
Sounds good. I put the AFR around 13.8 from 2048-4096 RPM's from 10-30% throttle with a nice slope back down to 13 AFR at 40% throttle. Now I have to wait for the rain to stop.
Elite HDF Member
Joined: Nov 2010
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From: Simi Valley, CA
If you want a ballpark feel for what changing the AFR might do for your fuel economy, check out this thread... https://www.hdforums.com/forum/touri...l-economy.html
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Seasoned HDF Member
Joined: Sep 2007
Posts: 9,741
Likes: 1,599
From: Danbury CT
If you want a ballpark feel for what changing the AFR might do for your fuel economy, check out this thread... https://www.hdforums.com/forum/touri...l-economy.html
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