SERT vs SEPST
Road Captain
Joined: May 2010
Posts: 669
Likes: 71
From: Tennessee
I understood them to be one in the same. Harley now has a "street tuner" listed in the 2011 parts catalog. The SEPST is only found in the Screamin' Eagle catalog and is for "race use only." I always thought that was where the SERT designation came from.
Road Master
Joined: May 2009
Posts: 930
Likes: 4
From: Jacksonville, FL
When you bought the bike, they should have given you the interface box in case changes ever need to be made or the computer needs to be read. Without that box, you are dead in the water, and will have to spend the plus $400 for a new one.
For this year, HD has added the street tuner which allows preloaded maps to be loaded, but not custom made maps created on the dyno. Originally, it was called the Race Tuner, then they changed the name.
For this year, HD has added the street tuner which allows preloaded maps to be loaded, but not custom made maps created on the dyno. Originally, it was called the Race Tuner, then they changed the name.
Seasoned HDF Member
Joined: Jun 2006
Posts: 28,559
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From: Vermont
The difference between the SERT and the SEPST is the tuning capabilities for the user. Those that have the SERT's can get them changed over to TTS Mastertune for $100 as they used to make the SERT for HD.
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Dennis
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Road Warrior
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From: Michigan
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Road Warrior
Joined: Oct 2010
Posts: 1,332
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From: Michigan
Is one better than the other? When I dropped the wife's FLSTC off for winter storage they were planning on installing the race tuner but I haven't stopped back in to see if that's actually what she got or not.
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Joined: Sep 2007
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From: Near Myrtle Beach, SC
The race tuners actually upload a new map to the ECM. You don't really "install" the race tuner, cause once the map is uploaded to the ECM via the included software and interface box, it overwrites the existing map with the new map, then you disconnect the interface box and you are done. Or at least done until the next time you try to refine your tune either on a Dyno or by trial and mostly error. The race tuners "marry" to one bike and one bike only the first time you connect the box and go through the initial process.
Last edited by Lowcountry Joe; Dec 26, 2010 at 08:44 PM.
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Road Warrior
Joined: Oct 2010
Posts: 1,332
Likes: 34
From: Michigan
The race tuners actually upload a new map to the ECM. You don't really "install" the race tuner, cause once the map is uploaded to the ECM via the included software and interface box, it overwrites the existing map with the new map, then you disconnect the interface box and you are done. Or at least done until the next time you try to refine your tune either on a Dyno or by trial and mostly error. The race tuners "marry" to one bike and one bike only the first time you connect the box and go through the initial process.
Yeah, I knew that!!!