I have installed on my super glide an arlen ness stage 1, fuelpak fuel programmer, and a Thunderheader pipe.

Issue is I noticed that when I ease off the throttle... there is a popping noise from the exhuast from what I can hear.

Is there a cure?... or nothing really to worry about?

 

Oh, nevermind just read about a million posts on this ... found an answer.

 

I had the same pipe on my N.T. it popped, I switched to V&H slip on's, they popped, I installed Big City Thunder baffles in the V&H pipes , now no pop. I didn't change the fuel management on any of these, so I think it's just the pipe. Nothing to worry about. I checked my spark plugs, very clean with a very light tan color, suggest's it's running o.k.

 

mine pops too but only when i let off fast. sounds cool in tunnels.

 

That is a good idea, I think I will check mine in a while.

 

if the fuel mapping is right it shouldn't pop

 

I just bought an 08 Fat Bob and I am very new to it all. It has thunderheaders and an aftermarket air cleaner. This bike pops all the time when I let off the throttle. I have some questions:
Is this bad for the motor?
Is the mapping wrong? Please explain mapping to me?
Who should I take it to if it is wrong? I'm in the San Francisco Bay Area>
Where is the computer located that does all of this?

Thanks in advance for your time and answers!