what is SEPST TTS

 

SEPST Screamin Eagle Pro Super Tuner
http://prosupertuner.harley-davidson...uperTuner.aspx


TTS The Turbo Shop Master tune
http://mastertune.net/index.html

See the "sticky" threads for each at the top of this forum-

SEPST
https://www.hdforums.com/forum/ignit...on-thread.html

TTS Matertune
https://www.hdforums.com/forum/ignit...formation.html

 

They reprogram the ECM so all wiring stays factory. I have mine custom dyno tuned which is the way most people go. No extra wire harness to worry about. You plug it in and program the ecm via a dynomometer throughout the rpm range and unplug it when completed. Then you wind up with a bike that's running to its fullest potential and most efficient. You get to see where the engine makes its best power and a AFR graph. Many benefits.