Disappointing dyno results
Seasoned HDF Member
Joined: Jan 2008
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From: State of Confusion
HD EFI Guru
Joined: Jan 2008
Posts: 4,488
Likes: 4,774
To some of us or maybe most of us it sure seems like magic!
I guess auto-tune was not the right nomenclature for what you were using to tune the bike, but when the TTS was working to read the afr and then putting the correct afr in the block (rpm/throttle position) where you were operating the bike it was a lot like what is referred to as auto-tune on PV. I do remember adjustments you had to make before that step and after you filled all the blocks in the operating range you still had to set the timing, so automatic it's not, but it does a great job of tuning.
I guess auto-tune was not the right nomenclature for what you were using to tune the bike, but when the TTS was working to read the afr and then putting the correct afr in the block (rpm/throttle position) where you were operating the bike it was a lot like what is referred to as auto-tune on PV. I do remember adjustments you had to make before that step and after you filled all the blocks in the operating range you still had to set the timing, so automatic it's not, but it does a great job of tuning.
Seasoned HDF Member
Joined: Jul 2017
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From: High Point, NC.
I don't either. With my setup there is a VERY noticeable reduction in torque when not running the db reducers. Also this was confirmed from Jamie at FM. But i can tell it when I ride. Havent had it dynoed yet, so no numbers to show how much.
Outstanding HDF Member
Joined: Aug 2017
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From: Jacksonville, FL
Jackpot 2:1:2
S&S MK45
SE Ventilator
Wes said he was gonna work on it tomorrow too... Pretty substantial gains over what I had. Not too worried about the differences. Just hoping for a good tune that runs a lot better.
Pick it up on Saturday.
S&S MK45
SE Ventilator
Wes said he was gonna work on it tomorrow too... Pretty substantial gains over what I had. Not too worried about the differences. Just hoping for a good tune that runs a lot better.
Pick it up on Saturday.
Outstanding HDF Member
Joined: Aug 2017
Posts: 2,816
Likes: 1,718
From: Jacksonville, FL
Can anyone explain why my torque at 2500 is only 90 (10 less than stock header)? Seems odd to me...
Thanks.
Thanks.
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Joined: Dec 2005
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From: poway
I don't understand what you don't get.. After all Jamie mentioned that these motors in way differently than TC. They are way more exhaust sensitive.
It’s the open mufflers. If they would have started the run @ 1500 rpm with the dB Killers in you would have crossed the 100 ft/lb line at around 2300 rpm.
Last edited by $tonecold; Apr 19, 2018 at 07:48 PM.