Yes, it is there, it will not hurt the bike at all.

Decel popping occurs when one of two things are present.

1. The bike is so lean the exhaust is superheated and is burning the unburnt fuel that is in the pipes (there is always some unburnt fuel in the pipes no matter how lean). This is very rare, and does not occur with the stock map and free flowing pipes being the only change.

2. The AFR IN THE pipes is just right to burn the unburnt fuel. This is quite a common occurrence when free flowing pipes are installed (whether or not a free flow A/C is installed), and also common in 103's in stock form.

To get rid of decel popping a lot of people put MORE fuel than is needed into the engine/over-richening the AFR so that more unburnt fuel goes into exhaust, changing the AFR in the exhaust so that is no longer optimum for combustion in the pipes. This is just a waste of gas. And if using decel enleanment found on most tuners it is still really hard to get rid of the popping/burbling when the injectors kick back in at about 1750 rpm.

Another way to get rid of decel popping is to change the AFR in the pipes (mufflers/Slip-ons).

The first thing to do, as mentioned above, is to make sure there are no leaks in the exhaust system letting extra air in.

If the AFR in the exhaust is still conducive to popping then you can try different slip-ons or a lolipop or Thunder Torque Inserts, anything that will change the "AFR" in the exhaust.

The benefit to the TTI's (they won't fit in stock slip-ons) is that it will let you keep your sound, increase the low and mid range power, and reduce/eliminate the decel pop by reducing/eliminating reversion, thus changing the AFR (in the pipes) to one that is not conducive to combustion.

You can tune for performance or tune for getting rid of decel pop.

If you tune for performance, it is very possible that you will get decel popping. It just depends on the configuration of your pipes.

Of course you can tune for getting rid of the decel popping, but most of the time you will be using more fuel and getting the same or less performance.

 

My '12 FB rumbly-pops when backing off from speed and shifting down! As long as it rumbles but doesn't pop between shifts, I like it!
One thing I've noticed is that if I run it up in a lower gear and back off, the injectors shut off all fuel going into the intakes! No rumble...no pop! When it hits 1000 rpm, they kick back in! I think this is a good feature!

 

Very useful info, I hadn't heard of this before (over fueling to clear pop) I tuned my fuel up to get rid of the popping and notice a big drop in my mpg, not that big of a deal to me but, I ended up leaning it back out just a bit, I still get the occasional pop but now I'm about 38-40mpg where before it was about 34...

 

It's funny. Growing up on 2 stroke MX bikes, tuning for optimum burn in the expansion chamber is just second nature. Kevin explains it very well.

 

Thanks everyone! This has been very educational. Since the decel popping isn't hurting anything, I'm not going to worry about it for now. At some point, I may upgrade to stage 1 or drop a tuner in place but for now, I have some other things that I have to start putting $$$ into. (Like a 17 year old who is starting her college visits. YIKES!!!!!)

 

I spoke to an engineer at Dobeck and he said the HD mapping for stage 1 kits and other mods increases fuel on acceleration only and that a fuel processor can eliminate most EFI problems as well as even out fuel flow at several RPM ranges and other conditions. Of course he is in business to sell TFI's.

 

I've noticed the same thing on My 103" stage 2 some decel popping and back firing once and a while. I just have a capped map on there rite now, I'm hoping once I get a tune done it goes away.