How much "pop" is normal/acceptable
Road Captain
Joined: Dec 2009
Posts: 646
Likes: 1
From: Rockford, IL
Main reason I installed that stuff was because of the performance aspect (and yes I know pulling the baffles out of pipes decreases low end performance, but it sounds sweet as hell at idle and at WOT). After everything was installed I realized that it looked pretty sweet as well.
I have had my bike dyno tuned and it still pops ocassionally, does that mean that it isn't tuned correctly...i don't think so. It the type of pipes I have that makes the popping/gurgling more audible
Last edited by sgod1100; Apr 11, 2011 at 06:52 AM.
Road Master
Joined: Aug 2010
Posts: 950
Likes: 19
From: Southcentral, OK
Decel popping is destroying your bike every time you let off the throttle.
Decel popping is normal, baffels in the pipes can quiet it down though.
Decel popping can be tuned out but it sets your A/F ratio too high.
Decel popping can be tuned out but it sets your A/F ratio too low.
After reading all the threads about decel popping on this forum I'm half blind and in every thread you get a lot of different opinions. I have not figured it out but my bike runs great and I hear a little.
Decel popping is normal, baffels in the pipes can quiet it down though.
Decel popping can be tuned out but it sets your A/F ratio too high.
Decel popping can be tuned out but it sets your A/F ratio too low.
After reading all the threads about decel popping on this forum I'm half blind and in every thread you get a lot of different opinions. I have not figured it out but my bike runs great and I hear a little.
I am amazed at the absolute range of opinions... some say "its all good" others say "holy ****".. and both say the other "has no idea what they are talking about"
FML
for the record, I am running V&H Short Slots, with SE Intake.. no tuner.. I get decel popping and gurgling. I am so confused as to whether the popping is bad or not, that I clutch when I roll off the throttle, so I don't hear it...
Stellar HDF Member
Joined: Jul 2010
Posts: 2,275
Likes: 241
From: Highlands, NJ
I hear this all the time.
"But it Pops when I Blip the throttle"
Don't Blip the friggin throttle!
My bike is dyno tuned by JD's. Bike runs great, plugs are a good color, good gas mileage. If I Blip, I pop occasionally, rarely I get a faint pop on upshift.
Point is, these things go POP.
Backfire or pinging is another story.
"But it Pops when I Blip the throttle"
Don't Blip the friggin throttle!
My bike is dyno tuned by JD's. Bike runs great, plugs are a good color, good gas mileage. If I Blip, I pop occasionally, rarely I get a faint pop on upshift.
Point is, these things go POP.
Backfire or pinging is another story.
Tourer
Joined: Aug 2010
Posts: 458
Likes: 0
From: NC
+1 here..
I am amazed at the absolute range of opinions... some say "its all good" others say "holy ****".. and both say the other "has no idea what they are talking about"
FML
for the record, I am running V&H Short Slots, with SE Intake.. no tuner.. I get decel popping and gurgling. I am so confused as to whether the popping is bad or not, that I clutch when I roll off the throttle, so I don't hear it...
I am amazed at the absolute range of opinions... some say "its all good" others say "holy ****".. and both say the other "has no idea what they are talking about"
FML
for the record, I am running V&H Short Slots, with SE Intake.. no tuner.. I get decel popping and gurgling. I am so confused as to whether the popping is bad or not, that I clutch when I roll off the throttle, so I don't hear it...
2011 Fat Boy Lo-Stock AC and Rush slip-ons here!
Decel popping becomes more apparent after I leave my house to the first corner when downshifting (bike is warmed up)
I notice that rolling off the throttle stops it a little!
If I agressively downshift it pops!
I clutch when I roll past the police station and the sign that states "Noise Ordinance Strictly Enforced"!
But..all in all..sometimes I'd like to hear the same throaty rumble coming down as I do on the way up!
I have no idea when I could do a stage 1.
Am I correct to presume that I can get away with installing just an A/C for now?
Ultimate HDF Member
Joined: May 2008
Posts: 6,642
Likes: 48
From: Ogden, UT
There are 2 things at least besides tuning that will cause decel pop.
Exhaust leaks,...check your nuts...
Not rolling off the throttle completely... Next time you are rolling down a hill, let off the throttle like you normally do, then try rolling the throttle 100% closed and see if there is a difference.
Often it is your riding style that gives you decel pop.
Like others have said, a little pop is not critical, but backfiring is an issue, if it sounds like a 44 mag as someone said earlier, I would fix that.
Exhaust leaks,...check your nuts...
Not rolling off the throttle completely... Next time you are rolling down a hill, let off the throttle like you normally do, then try rolling the throttle 100% closed and see if there is a difference.
Often it is your riding style that gives you decel pop.
Like others have said, a little pop is not critical, but backfiring is an issue, if it sounds like a 44 mag as someone said earlier, I would fix that.
Road Captain
Joined: May 2011
Posts: 556
Likes: 1
From: Virginia
so I 'm running a SE intake, V&H ShortShots, and V&H FuelPak... whenever I let off the throttle to change gears or decel it sounds like a 50's or 60's Chevy with glasspacks that has ridden up to speed and let off... is that normal? I wish some one could hear it. Sounds loud and kinda cool but my bike is only 2 months old.
Last edited by BearNVa; Jun 7, 2011 at 10:31 AM.
Club Member
Joined: May 2007
Posts: 145,895
Likes: 821
From: 40 miles Northeast of Indy..
Gurgling is normal on mine... little bit of poping is also..
when mine popped all the way down the rpm's with a boom once in a while it was a air leak.
when mine popped all the way down the rpm's with a boom once in a while it was a air leak.
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Tourer
Joined: Aug 2010
Posts: 458
Likes: 0
From: NC
There are 2 things at least besides tuning that will cause decel pop.
Exhaust leaks,...check your nuts...
Not rolling off the throttle completely... Next time you are rolling down a hill, let off the throttle like you normally do, then try rolling the throttle 100% closed and see if there is a difference.
Often it is your riding style that gives you decel pop.
Like others have said, a little pop is not critical, but backfiring is an issue, if it sounds like a 44 mag as someone said earlier, I would fix that.
Exhaust leaks,...check your nuts...
Not rolling off the throttle completely... Next time you are rolling down a hill, let off the throttle like you normally do, then try rolling the throttle 100% closed and see if there is a difference.
Often it is your riding style that gives you decel pop.
Like others have said, a little pop is not critical, but backfiring is an issue, if it sounds like a 44 mag as someone said earlier, I would fix that.
Damn..sounding like a 44 mag? Sure as hell hope it never gets to that!
Thanks for the response!
2011 Fat Boy Lo-Stock AC and Rush slip-ons here!
Decel popping becomes more apparent after I leave my house to the first corner when downshifting (bike is warmed up)
I notice that rolling off the throttle stops it a little!
If I agressively downshift it pops!
I clutch when I roll past the police station and the sign that states "Noise Ordinance Strictly Enforced"!
But..all in all..sometimes I'd like to hear the same throaty rumble coming down as I do on the way up!
I have no idea when I could do a stage 1.
Am I correct to presume that I can get away with installing just an A/C for now?
Decel popping becomes more apparent after I leave my house to the first corner when downshifting (bike is warmed up)
I notice that rolling off the throttle stops it a little!
If I agressively downshift it pops!
I clutch when I roll past the police station and the sign that states "Noise Ordinance Strictly Enforced"!
But..all in all..sometimes I'd like to hear the same throaty rumble coming down as I do on the way up!
I have no idea when I could do a stage 1.
Am I correct to presume that I can get away with installing just an A/C for now?
Gurgle on downshift is normal, a bang like a gun being fired is not (that's what I consider a decel pop). Please contact me if anyone has specific tuning questions.
-Ryan