too much decelaration pop... help!
Ultimate HDF Member
Joined: Feb 2009
Posts: 5,132
Likes: 228
From: Garland, TX
I just installed a TH on my bike, it pops like crazy and I am all stock except for the exhaust at this point. You have to remember, TH has next to no baffle. Just some fiberglass packing around the cone that burns off, so it will pop a lot more than your stock or even VH pipes will. Personally, I love it...but in your case a tune might help it a little, but I don't think it will ever disappear with a TH.
Ultimate HDF Member
Joined: Jan 2009
Posts: 5,016
Likes: 277
From: East Tn Foot of The Dragon
i have a 2015 dyna. I just put thunderheaders and stage one air cleaner and the stage 1 download but I still have a ton of deceleration pop. what should I do short of getting it dyno cause im not made of money hence military.really appreciate the help guys!
Ride safe
Ride safe
Road Master
Joined: Aug 2012
Posts: 854
Likes: 20
From: CT
I just installed a TH on my bike, it pops like crazy and I am all stock except for the exhaust at this point. You have to remember, TH has next to no baffle. Just some fiberglass packing around the cone that burns off, so it will pop a lot more than your stock or even VH pipes will. Personally, I love it...but in your case a tune might help it a little, but I don't think it will ever disappear with a TH.
yes, the th does have a baffle, actually 2 baffles. It has a perforated baffle with packing behind it that will NOT come out, and the square cone baffle. The pop can be completely eliminated with tuning, but if you know what to adjust you can really make it sound however you want on decel. Personally I like just a little pop and gurgle on decel with a th. Just a tuning device might not eliminate or even help the pop. Knowing what to do with the fuel and timing tables at closed throttle is what will fix it, and it can be easily done without a dyno.
Last edited by vdop; Apr 9, 2015 at 08:59 PM.
Outstanding HDF Member
Joined: Aug 2012
Posts: 3,217
Likes: 90
From: Detroit
i have a 2015 dyna. I just put thunderheaders and stage one air cleaner and the stage 1 download but I still have a ton of deceleration pop. what should I do short of getting it dyno cause im not made of money hence military.really appreciate the help guys!
Ride safe
Ride safe
Road Warrior
Joined: Nov 2010
Posts: 1,251
Likes: 30
From: Ashburn, VA
I have short shots and cams and mine does not decel pop. Proper tune is how. You do not have to live with it.
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
8 Best Harley-Davidson Motorcycles Ever
Pouria Savadkouei
10 Worst Harley-Davidson Motorcycles Ever
Pouria Savadkouei
Killer Custom's Jail Break Is The Breakout That Refused to Blend In
Verdad Gallardo
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Verdad Gallardo
Harley-Davidson Reveals Super Cool Cafe Racer Concept
Verdad Gallardo
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Verdad Gallardo
10 Motorcycles You Should Never Buy
Joe Kucinski
10 Things Harley-Davidson Needs to Fix in 2026
Verdad Gallardo
Southpaw Super Glide: A Left-Hand-Drive 1979 Harley FXE Built to Fit the Rider
Verdad Gallardo
Road Captain
Joined: Jul 2013
Posts: 585
Likes: 3
From: Boise, Idaho
I had the same issue, then I had my local dealer download a map using my Screaming Eagle Super Pro Tuner. The first map left a lot of popping on decel so I took it back today, they reduced the decel tables and now it runs like a raped ape! It's got tons of power/speed and the decel is gone.
That's what I did, you choose your own method but it does need to be tuned using one of the many tuners. Good luck in your choice.
That's what I did, you choose your own method but it does need to be tuned using one of the many tuners. Good luck in your choice.
