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ECM/Fuel Management systems ECM/Fuel Management systems For Road Glides

 
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post #1 of 7 (permalink) Old 10-17-2014, 08:16 PM Thread Starter
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Simple Question

Just had Vance and Hines True Duals with twin slash pipes, big sucker air cleaner and Commander 5 installed. I love the setup just want to know is little backfire normal on decal?
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post #2 of 7 (permalink) Old 10-17-2014, 10:31 PM
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Is it the decel pop out of the exhaust or is it poping through the throttle body? Either way, it shouldn't be doing it with a proper tune. Did you install everything or did you have it done?

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post #3 of 7 (permalink) Old 10-18-2014, 10:50 AM
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+1^^^^^
Sounds like the AFR is a bit out. The bike should not pop or backfire if the tune is right.


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post #4 of 7 (permalink) Old 10-18-2014, 04:02 PM Thread Starter
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It is more like a heavier growl, it is not like a single backfire. And I did not do the install it was done at a local mom and pop bike shop in business for 15 years. Owner as they all were was a shop foreman at local HD dealership previously. When I asked about tuning at pick up he said all was done by putting in this and that into computer and it would be flawless? I am not at all a mechanic and bike seems to be better overall, just wonder if any decal sounds would be present if all is done right?

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post #5 of 7 (permalink) Old 10-18-2014, 05:27 PM
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i have v&h propipe/pv5/screaming eagle intake and all done myself with a canned tune and get a little popping on decel only when letting it drop from 5,000 rpm down to 2000...in other words only when im racing around like a maniac, when driving civilized no popping on decel or throttle up
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post #6 of 7 (permalink) Old 10-20-2014, 07:43 AM
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On a PC5 the decel area is in the 0 % range . Now if the stock cal that is loaded into in ECM, has the injectors turned off that will not do much of anything.

Add 3-5% fuel in the zero row from 4500-2250. See what that does. IF its lean that should reduced the closed throttle issue. PC5 has its limitations as you are dealing with a piggy back tuner.

For the basic upgrades you have it will complete the job without issue. Good luck
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post #7 of 7 (permalink) Old 10-20-2014, 09:15 AM
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I just switched to V&H mufflers and mine did the same thing. I ran three autotunes with the PV and it has stopped. I also had a lot of gurgling on the exhaust on decal before the three tunes. That is gone as well. Mine was a consistent pop when I went above 3K rpms on shifting from first to second. If I stayed under 3K, no pop.


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