Deceleration Popping
Tourer
Joined: Jun 2010
Posts: 266
Likes: 14
From: Illinois
I've had my Glide Dyno'd 3 times at 3 different dealers in the St Louis area. No one has been able to get rid of my popping. They keep telling me it's normal. I've called V&H about my Propipe as well. I'm going to live with it for now. I have a SEPST, SE A/C, and Chrome Propipe. That combination hasn't been good to me. Other people I've talked to about a Propipe haven't had any problems with popping. The HD Dealer Techs see me coming and shake their heads. I don't hear other bikes popp, but I've done everything I can to fix it. Without an exhaust change, I don't think there is a fix. It intermittently popps on upshifting and decel. I can't find any pattern to it.
Last edited by ral819; Jun 9, 2012 at 04:27 PM.
Stellar HDF Member
Joined: Sep 2007
Posts: 2,458
Likes: 671
From: Vancouver Island B.C.
0% column from 1500 up. Adding 5% is the first step, you may need to add more. No change in idle speed.
Road Master
Joined: Jun 2009
Posts: 866
Likes: 2
From: Pocahontas, IL
Ral819 - I could be wrong but that SEPST might be your issue. It isn't as tunable as the SERT. The 0% column is how much gas is given when the throttle is at 0. Not being tunable shouldn't be a big problem because the fuelpak I have isn't tunable either and I have no decel popping. I do also have the Harley stage 1 download and never had decel popping before the fuelpak. I have BUB7 slip-ons and V&H dresser duals. Guess I am just lucky with the whole popping issue
PS - I have never had a dyno tune. Don't plan to either
PS - I have never had a dyno tune. Don't plan to either
Extreme HDF Member
Joined: Jun 2011
Posts: 10,216
Likes: 224
From: Glendale AZ
Decel pop is caused by either a too lean condition at 0% throttle or an exhaust gasket leak causing unburned exhaust gasses to combust in the pipes.
If you just got it tuned it may need some fuel added @ 0% throttle,that's if it didn't pop before the tune. Mine popped on decel so I added 5% fuel and problem solved.
If you just got it tuned it may need some fuel added @ 0% throttle,that's if it didn't pop before the tune. Mine popped on decel so I added 5% fuel and problem solved.
Extreme HDF Member
Joined: Jun 2011
Posts: 10,216
Likes: 224
From: Glendale AZ
Originally Posted by dswansbiker
I am running the Fuel Moto Stage 1 setup with Powervision and would get a pop once in a while when shifting from 1st to 2nd. I let Jaimie at FM know and he emailed back a revised map that I just downloaded tonite. Pop is gone! Nice!
Can you look in the fuel tables and tell us what Jamie changed from your original map? That would help by comparing what everyone else might be doing.
I am running the Fuel Moto Stage 1 setup with Powervision and would get a pop once in a while when shifting from 1st to 2nd. I let Jaimie at FM know and he emailed back a revised map that I just downloaded tonite. Pop is gone! Nice!
Can you look in the fuel tables and tell us what Jamie changed from your original map? That would help by comparing what everyone else might be doing.
Club Member
Joined: Jun 2007
Posts: 3,435
Likes: 28
From: Living in open carry state :D
If you keep your baffles to 2" or less then it is easy to not have any popping. The more free the exhaust the more prone to popping.
Also IMHO the SEPST is more tunable then the SERT.
Also IMHO the SEPST is more tunable then the SERT.
Extreme HDF Member
Joined: Jun 2011
Posts: 10,216
Likes: 224
From: Glendale AZ
Originally Posted by RichardH
Luckily the beauty of TTS Mastertune allowed me to eliminate the popping exactly as the manual suggests. By enrichening (lowering) the AFR between 1500 and 3500 RPM in the 20kPa column by 5-10%.
Richard, Is the kPa on the TTS the 20% throttle position or does it mean something else?
Luckily the beauty of TTS Mastertune allowed me to eliminate the popping exactly as the manual suggests. By enrichening (lowering) the AFR between 1500 and 3500 RPM in the 20kPa column by 5-10%.
Richard, Is the kPa on the TTS the 20% throttle position or does it mean something else?
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Extreme HDF Member
Joined: Jun 2011
Posts: 10,216
Likes: 224
From: Glendale AZ
I've had my Glide Dyno'd 3 times at 3 different dealers in the St Louis area. No one has been able to get rid of my popping. They keep telling me it's normal. I've called V&H about my Propipe as well. I'm going to live with it for now. I have a SEPST, SE A/C, and Chrome Propipe. That combination hasn't been good to me. Other people I've talked to about a Propipe haven't had any problems with popping. The HD Dealer Techs see me coming and shake their heads. I don't hear other bikes popp, but I've done everything I can to fix it. Without an exhaust change, I don't think there is a fix. It intermittently popps on upshifting and decel. I can't find any pattern to it.