thunder max help

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Apr 28, 2011 | 08:35 AM

bpdeer57

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Joined: Apr 2008

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From: Vermont

thunder max help

I installed my thunder max and mapped it, after starting bike a number of times it settled in and idled great. I didn't have time for a ride then but went out today. Bike did not want to idle at first and ran rough and popped a lot. Did I forget to do something or will it just take a while for the auto tune to work? Thanks for any help!

Apr 28, 2011 | 09:42 AM

merdahl

Road Master

Joined: Nov 2007

Posts: 868

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From: AZ

Did you load the appropriate map?

Did you go thru the initialization process described in your instructions?
30 sec on-30 sec off, repeat 3 times. Then start and let it idle up to full temp without touching the throttle (IAC cal).

I had a problem from washing the bike. Water gets into the IAC harness and the IAC won't work right. Symptoms are runs fine at speed but won't idle. If you look at your IAC map, it is a mess. One time actually blew the IAC driver in the TMAX, had to send it back for a warranty replacement. Now I always let it sit 24 hours after washing before starting it. Have not had an issue in the rain.

Last edited by merdahl; Apr 29, 2011 at 09:35 AM.

Apr 28, 2011 | 06:14 PM

Plow64

Stellar HDF Member

Joined: Jan 2007

Posts: 3,447

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From: Northern VA

Is the base map you loaded a good match for your bike's engine (pipes, cam, throttle body, etc)? Might be a good idea to start over and reload the base map, initialize like merdahl said, then ride for 20 minutes, shut it down, restart and ride again for 20 minutes, etc. Repeat the run-stop-run cycle several times so the auto tune can work it's magic.

Last edited by Plow64; Apr 28, 2011 at 06:18 PM.

Apr 29, 2011 | 06:17 AM

bpdeer57

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From: Vermont

I used map 536 have a 08 Fat Boy with Vance and Hines long shots staggered. I did everything as instructed and even tried to reload and start over. I had the same results, the bike will not idle at first after about 8 to 10 restarts it runs very rough until it gets dialed in (about 10 minutes) the next time I start the cold bike I have the same issues. I may call tech today and go for a ride after I get done to try to let the bike settle in. Any other suggestions?

Apr 29, 2011 | 07:15 AM

user 37474839

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Have you tried starting the bike with the unit connected to your computer. There is a real-time diagnostic screen that would likely help you identify the problem.