Thundermax with Lots of Decel Popping
Thundermax with Lots of Decel Popping
So I installed Thundermax w/AT on my '08 Dyna in November or December...went with the most recent basemap that closely matched my setup (as per Zipper's recommendation), and after a couple hundred miles, the decel popping has never gone away...if anything, it's gotten worse.
My setup is a stock 96ci, SE air cleaner, and Thunderheader......I'm at work and don't know the basemap number I'm using right off, but it was released in April 2008 if I remember right...I think the only difference between that map's specs and mine is that it calls for a 2-1 DD FatCat.
Before anyone asks, I am running in closed loop mode, did the intiailization, and have no trouble codes...
Any help?
My setup is a stock 96ci, SE air cleaner, and Thunderheader......I'm at work and don't know the basemap number I'm using right off, but it was released in April 2008 if I remember right...I think the only difference between that map's specs and mine is that it calls for a 2-1 DD FatCat.
Before anyone asks, I am running in closed loop mode, did the intiailization, and have no trouble codes...
Any help?
I'm using the tapered crunch gaskets.
Banned
Joined: Mar 2007
Posts: 3,706
Likes: 7
From: Woodstock, Ont , Can
So I installed Thundermax w/AT on my '08 Dyna in November or December...went with the most recent basemap that closely matched my setup (as per Zipper's recommendation), and after a couple hundred miles, the decel popping has never gone away...if anything, it's gotten worse.
My setup is a stock 96ci, SE air cleaner, and Thunderheader......I'm at work and don't know the basemap number I'm using right off, but it was released in April 2008 if I remember right...I think the only difference between that map's specs and mine is that it calls for a 2-1 DD FatCat.
Before anyone asks, I am running in closed loop mode, did the intiailization, and have no trouble codes...
Any help?
My setup is a stock 96ci, SE air cleaner, and Thunderheader......I'm at work and don't know the basemap number I'm using right off, but it was released in April 2008 if I remember right...I think the only difference between that map's specs and mine is that it calls for a 2-1 DD FatCat.
Before anyone asks, I am running in closed loop mode, did the intiailization, and have no trouble codes...
Any help?
Ron
Ron
Last edited by rbabos; Apr 8, 2009 at 05:44 PM.
Yes it will likely get worse as the auto tune does it's thing. Where are you getting the popping and in higher rpms or lower rpms. Lower, I can help you, but higher you need to play with the decel fuel settings. You must be 100% sure you have no exhaust leaks as even the slightest will cause problems.
Ron
Ron
Ron
Ron
Is there a way to tell if I have an exhaust leak? I was told before "if you have one, you'll know"......and I really don't think I do. The bike has plenty of power behind it...seems like the only thing wrong with it is the popping.
Banned
Joined: Mar 2007
Posts: 3,706
Likes: 7
From: Woodstock, Ont , Can
Short of putting you foot on the end of the pipe while someone else checks it with cig smoke, not really. Sounds like it's popping to the extreme. Don't think a map change will cure it but the exhaust may dictate the need for it. I take it there was no popping before the tmax and this exhaust was on before the tmax install? What map do you have now? If you run the smartlink software and in the tools menu check the autotune points anylizer. It will give you a good idea on how the map is working for you.
Ron
Ron
Last edited by rbabos; Apr 8, 2009 at 07:16 PM.
Short of putting you foot on the end of the pipe while someone else checks it with cig smoke, not really. Sounds like it's popping to the extreme. Don't think a map change will cure it but the exhaust may dictate the need for it. I take it there was no popping before the tmax and this exhaust was on before the tmax install? What map do you have now? If you run the smartlink software and in the tools menu check the autotune points anylizer. It will give you a good idea on how the map is working for you.
Ron
Ron
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Road Master
Joined: Jul 2007
Posts: 1,009
Likes: 4
It looks like a lot of fuel is beinging added to the rear cylinder. Sure looks like an exhaust leak at the rear head. Did you use new gaskets.
I had popping problems with the T/Max and new gaskets cured it.
Also look at the rear cylinder fuel flow to see how the adjustment points look. Mine had a lot of radical adjustment points.
If you don't have leaks stick with rbabos suggestions.
I had popping problems with the T/Max and new gaskets cured it.
Also look at the rear cylinder fuel flow to see how the adjustment points look. Mine had a lot of radical adjustment points.
If you don't have leaks stick with rbabos suggestions.
It looks like a lot of fuel is beinging added to the rear cylinder. Sure looks like an exhaust leak at the rear head. Did you use new gaskets.
I had popping problems with the T/Max and new gaskets cured it.
Also look at the rear cylinder fuel flow to see how the adjustment points look. Mine had a lot of radical adjustment points.
If you don't have leaks stick with rbabos suggestions.
I had popping problems with the T/Max and new gaskets cured it.
Also look at the rear cylinder fuel flow to see how the adjustment points look. Mine had a lot of radical adjustment points.
If you don't have leaks stick with rbabos suggestions.