SE Smart Tune Pro Automatic Tuning Module?
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Seasoned HDF Member
Joined: Oct 2014
Posts: 5,077
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From: Camp Lejeune, NC
SE Smart Tune Pro Automatic Tuning Module?
https://www.harley-davidson.com/us/e...le/p/41000445A
I'm seriously considering adding this to my bike. I already have the SE Street Tuner and feel like this would be a great addition to get the best touring tune I can. The vast majority of the reviews I've read are positive, with the few negative ones being about price or user error.
Anyone have this installed? What's your opinion on it?
I'm seriously considering adding this to my bike. I already have the SE Street Tuner and feel like this would be a great addition to get the best touring tune I can. The vast majority of the reviews I've read are positive, with the few negative ones being about price or user error.
Anyone have this installed? What's your opinion on it?
Grand HDF Member
Joined: Jul 2007
Posts: 3,740
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From: Bates County MO
It doesn't change the allowable range of the SE map (+/- 4% closed loop area, +/- 10% open loop area), but it does allow a much wider area of adjustment.
There are 2 areas in the VE tables: closed loop (<85KPA, <3750 RPM) and open loop (>3750 RPM, >85KPA).
Closed loop uses the stock O2s for feedback. Open loop relies on whatever #s are in the VE tables without active feedback.
If you add the ATM, it will replace the factory O2 sensors with wide band O2s.
Not as fast/accurate in the areas where the factory narrow bands used to work, but able to cover the entire map effectively. Can be used with TTS or PV if you go aftermarket.
There are 2 areas in the VE tables: closed loop (<85KPA, <3750 RPM) and open loop (>3750 RPM, >85KPA).
Closed loop uses the stock O2s for feedback. Open loop relies on whatever #s are in the VE tables without active feedback.
If you add the ATM, it will replace the factory O2 sensors with wide band O2s.
Not as fast/accurate in the areas where the factory narrow bands used to work, but able to cover the entire map effectively. Can be used with TTS or PV if you go aftermarket.
Seasoned HDF Member
Joined: Jan 2008
Posts: 13,674
Likes: 11,463
From: State of Confusion
why bother with VVT? it seems to deliver the smoothest running experience across the entire power band as they have ever developed..personally I wouldn't be throwing money like that at it..look at Steve Cole's recent post and graph of his baseline 117 VVT stock dyno tune below....also, when the SE ATM came out I asked about it here and Steve replied with compelling reasons why a proper dyno tune by an experienced and reputable dyno operator would be a better choice..I took his advice because our home dealership had / has that level of expertise and was glad I did..my 107 ran fantastic from our coast to over our Cascade mountain range....maybe he'll come along and elaborate further
https://www.hdforums.com/forum/2024-...in-2026-a.html
https://www.hdforums.com/forum/2024-...in-2026-a.html
Thread Starter
|
Seasoned HDF Member
Joined: Oct 2014
Posts: 5,077
Likes: 2,386
From: Camp Lejeune, NC
It doesn't change the allowable range of the SE map (+/- 4% closed loop area, +/- 10% open loop area), but it does allow a much wider area of adjustment.
There are 2 areas in the VE tables: closed loop (<85KPA, <3750 RPM) and open loop (>3750 RPM, >85KPA).
Closed loop uses the stock O2s for feedback. Open loop relies on whatever #s are in the VE tables without active feedback.
If you add the ATM, it will replace the factory O2 sensors with wide band O2s.
Not as fast/accurate in the areas where the factory narrow bands used to work, but able to cover the entire map effectively. Can be used with TTS or PV if you go aftermarket.
There are 2 areas in the VE tables: closed loop (<85KPA, <3750 RPM) and open loop (>3750 RPM, >85KPA).
Closed loop uses the stock O2s for feedback. Open loop relies on whatever #s are in the VE tables without active feedback.
If you add the ATM, it will replace the factory O2 sensors with wide band O2s.
Not as fast/accurate in the areas where the factory narrow bands used to work, but able to cover the entire map effectively. Can be used with TTS or PV if you go aftermarket.
Thread Starter
|
Seasoned HDF Member
Joined: Oct 2014
Posts: 5,077
Likes: 2,386
From: Camp Lejeune, NC
why bother with VVT? it seems to deliver the smoothest running experience across the entire power band as they have ever developed..personally I wouldn't be throwing money like that at it..look at Steve Cole's recent post and graph of his baseline 117 VVT stock dyno tune below....also, when the SE ATM came out I asked about it here and Steve replied with compelling reasons why a proper dyno tune by an experienced and reputable dyno operator would be a better choice..I took his advice because our home dealership had / has that level of expertise and was glad I did..my 107 ran fantastic from our coast to over our Cascade mountain range....maybe he'll come along and elaborate further
https://www.hdforums.com/forum/2024-...in-2026-a.html
https://www.hdforums.com/forum/2024-...in-2026-a.html
Seasoned HDF Member
Joined: Jan 2008
Posts: 13,674
Likes: 11,463
From: State of Confusion
yeah, I certainly wouldn't trust the job to just anyone..so the question is, what isn't your 121 VVT doing that you wish it would be better at? not just the expense, but adding some complexity and having it attached to the bike etc..I just don't recall anyone owning these engines ever complaining about how they run, maybe don't fix what ain't broken is wise in this case? just evaluating pros and cons &, risk / reward .. have you done a Custom Ride Mode yet?
Thread Starter
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Seasoned HDF Member
Joined: Oct 2014
Posts: 5,077
Likes: 2,386
From: Camp Lejeune, NC
yeah, I certainly wouldn't trust the job to just anyone..so the question is, what isn't your 121 VVT doing that you wish it would be better at? not just the expense, but adding some complexity and having it attached to the bike etc..I just don't recall anyone owning these engines ever complaining about how they run, maybe don't fix what ain't broken is wise in this case? just evaluating pros and cons &, risk / reward .. have you done a Custom Ride Mode yet?
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From: State of Confusion
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Thread Starter
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Seasoned HDF Member
Joined: Oct 2014
Posts: 5,077
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From: Camp Lejeune, NC
I was talking about creating a Custom Ride Mode..where you can select different settings from Road, Rain, Track, Sport Mode, throttle sensitivity, engine braking, etc. ( The procedure is in your OM) I created one that I love and use 95% of the time, only ever using Rain Mode when conditions are 'greasy'. Highly recommend playing around with this and dialing that in before moving on to $ 'solutions' .. you may just be surprised at how satisfying it is, I was anyway
