2-1 Install
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Road Warrior
Joined: Jun 2009
Posts: 1,514
Likes: 454
From: Canada
2-1 Install
Hello,
If the exhaust is swapped from Stock [with SE Mufflers] to a 2-1 Supertrapp on an 09 FLHX, do I need to re-tune?
I have a TTS, and had my bike professionally tuned on a dyno.
I've heard I can install, and let the bike idle and the ECM will correct itself.
Any truth to that?
Thanks
See you in Sturgis.
If the exhaust is swapped from Stock [with SE Mufflers] to a 2-1 Supertrapp on an 09 FLHX, do I need to re-tune?
I have a TTS, and had my bike professionally tuned on a dyno.
I've heard I can install, and let the bike idle and the ECM will correct itself.
Any truth to that?
Thanks
See you in Sturgis.
Road Captain
Joined: Jan 2008
Posts: 667
Likes: 59
From: Lufkin, Tx.
You will need to go back to the dyno if you want it right. Your tune was set up for stock exhaust/SE mufflers. Going to a 2/1 will change your tune. The ecm will adapt to changes in temp, altitude, etc., but it won't retune for a different exhaust. That's what your TTS will do when you have it retuned.
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