Problems with decel Pop on street bob
Thread Starter
|
Stage II
Joined: Sep 2015
Posts: 2
Likes: 0
From: PA
Problems with decel Pop on street bob
Riding a 2012 street bob with short shots have pc5 on it still getting a lot of popping was wondering if switching to a super tuner would be better and make the bike run better any ideas?
Thread Starter
|
Stage II
Joined: Sep 2015
Posts: 2
Likes: 0
From: PA
Problems with decel pop on street bob
I have the pc5 fully dyno tuned and it's still getting that popping some Harley's say that the pc5 is good others say the super tuner is good so idk if I make the switch to the super tuner if that would help
Road Warrior
Joined: Aug 2011
Posts: 1,991
Likes: 9
From: washington
i had a 2010 dyne custom with the big radius and a free flow a/c.... i put the PV5 on it and it popped a bit.... i called power vision/ power commander and they gave me a different map to put into it and that took care of it.... i wasn't going to spend more $$$ on a different fuel management system unless i had to.... i didn't have to, i just had to tweet it a bit.... i never had it dyno'd and it ran fine
Its definitely the map. Too lean still. I have gutted pipes with just tti's, a heavy breather and I'm only using FL-VIED's @ 50% and I get decel pop VERY rarely. If its dyno tuned maybe the map didn't flash right or maybe try somewhere else. I'm no expert but a pc5 should do the job.
Road Captain
Joined: Apr 2007
Posts: 586
Likes: 48
From: Saint Augustine, FL
This may or may not be obvious - but you also want to ensure everything is tight. I've seen many a bike with popping that simply needed the bolts that mount to the head tightened up. Often times they work loose after the initial install & a few hundred miles.
Extreme HDF Member
Joined: Feb 2015
Posts: 10,907
Likes: 8,758
From: Galt's Gulch - MI
Its definitely the map. Too lean still. I have gutted pipes with just tti's, a heavy breather and I'm only using FL-VIED's @ 50% and I get decel pop VERY rarely. If its dyno tuned maybe the map didn't flash right or maybe try somewhere else. I'm no expert but a pc5 should do the job.
No, that's an internet myth... decel popping isn't a lean condition, it has to do with fresh air mixing with unburnt fuel coming out of the engine under off throttle situations, when the AFR is right it burns off. You can correct that annoying sound by adding fuel off-throttle to alter the AFR or prevent the reversion of fresh air in the exhaust system... the stock exhaust has decel popping as well, you just can't hear it as readily.
For example, when using a Power Vision you can add fuel during off-throttle decel and alter your VE percentages in Quick Tune, combine that with some Thunder Torque Inserts to help prevent reversion and you can dial out that decel popping. With the OP using a PCV his map will need to be altered, simple job with the DynoJet software...
Trending Topics
Outstanding HDF Member
Joined: Aug 2012
Posts: 3,217
Likes: 90
From: Detroit
Exactly. Decel popping isn't an indication of a problem. If it bothers you, you can get rid of it by throwing the decel mixture so far off that it won't burn.
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
7 Surprising Harley-Davidson Products that Are Not Motorcycles
Verdad Gallardo
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
Road Captain
Joined: Apr 2007
Posts: 586
Likes: 48
From: Saint Augustine, FL
Some mild is normal/expected, but there's a difference in the "mild popping" you & the previous poster spoke of and a major hiss/pop or loud bang/snap and the frequency at which it happens.
Exhaust leaks are very common issues on newly installed pipes & causes popping - whether it be due to improper installation, torqueing or whatever - or just simple need to re-torque down the main bolts at the exhaust port.
If all is good & tight, contact the DynoJet folks, tell'em your setup and they'll shoot you over another map which will probably fix it. Just be sure to give them all the details they need: bike year, model, what air cleaner & exhaust you have on - and exactly WHEN its doing the popping (what gear, speed, sometimes, every time, is it MAJOR popping or little snappy pops, etc). That info may help.
No need to swap out tuners at all.
Last edited by sknyfats; Sep 4, 2015 at 09:55 AM.
