Auto Compression Release

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Sep 20, 2011 | 06:36 PM

cchawg

Thread Starter

Intermediate

Joined: Aug 2010

Posts: 33

Likes: 0

From: Madison, MS

Auto Compression Release

My ACR is not opening up when I turn the ignition on. I have installed a ThunderMax, replacing the ECM, and the bike has more torque and hp. Could the ThunderMax be preventing or not permitting the ACR circuit to get a charge opening the ACR valves?

Sep 20, 2011 | 07:10 PM

18BKLR

Road Master

Joined: Apr 2010

Posts: 862

Likes: 1

From: N Dak

How do you know they are not opening up?

You write like there is one there. There are two. You should hear a click with the ignition is turned on.

Sep 20, 2011 | 07:21 PM

bagger76

Tourer

Joined: Oct 2009

Posts: 323

Likes: 2

From: Central Pennsylvania

did your bike come with them or did you add them. If you added them the ecm needs to be turned on by harley or there is a setting in the thunder max to enable them. When i was running a power commander they clicked when i turned on the key, but now i have a tts and they only enable while its cranking.