Thundermax install question

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Mar 29, 2012 | 06:15 PM

steelhorsebiker

Thread Starter

Stage III

Joined: Mar 2012

Posts: 3

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From: Earth

Thundermax install question

I have a 2005 Soft Tail Fatboy 96 in. I installed a Thundermax Autotune and a heavy breather air filter. I watched the official installation video numerous times and followed the written instructions to a "T". At first start-up the idle was extremely erratic. The first ride (approx. 10 miles)...my bike stalled 9 times...idle was not right...speedometer went nuts...stuck at 120 mph then back to zero when I was riding at least 45 mph...very weird.
Does anyone have any idea what is going on?

Mar 31, 2012 | 10:54 AM

Bone11B

Road Captain

Joined: Dec 2008

Posts: 601

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From: Texas Nomad

I used this video http://www.youtube.com/watch?v=5nr3akoWt6w
did you cycle the ignition switch like it said?

Before you rode it did you run the IAC auto?

Mar 31, 2012 | 01:21 PM

mike634

Advanced

Joined: Mar 2007

Posts: 97

Likes: 4

From: New Jersey

.....

Last edited by mike634; Mar 31, 2012 at 02:54 PM. Reason: repeated post

Sep 29, 2017 | 01:42 AM

Deadof_knight

Cruiser

Joined: Jun 2015

Posts: 128

Likes: 13

From: Oklahoma

initialize the ecm after loading the as close to the right map you can find I have 3 even started one up with a different bike map and it still never had much of an issue except running rich ....