Good start.
Also depends on your definition of "Pop".
With performance upgrades, things change.
With my upgrades and dyno, Mine has a ton of growl and some "Gurgle" that it did not have before, they say it is to be expected. One of the techs that I trust test rode mine a couple of weeks ago after getting a new front tire and front brakes installed. I asked him about the decal difference. He said all is fine and normal - followed by "That wicked bastard snorts and runs like a damned raped ape!"
Power Duals, SEAC with Stage One, SERT, RC Xhaust, SE255's, all contribute to the transformation from Bike to Beast!
(Not to mention shorter rear tire life, LOL)

 

Don't know if this applies to your situation but after mine was built to a 107" and dyno tuned I had some very loud popping between shifts. Eventually I figured out that if I made sure I was closing the throttle completely when shifting I got no pops. But when going through the gears quickly and not closing the throttle completely between gears then it would blast off some rip snorters. I find better throttle control to be an adequate no cost solution to the popping in my case. Maybe it would help your situation....?

 

Did it pop on the way home from the dyno tune?

 

I have the Power Vision also but have not had a dyno tune done, just the base map from FuelMoto and some auto tune runs. I also get some popping but bike seems to run very good otherwise. I have the FullSac Sport pipe header, SE breather and recored mufflers. I have checked for exhaust leak using both the candle flame and the smoke method but have found nothing ? I just ride it and don't worry about the occasional pop. If it's in the tune, I don't have the knowledge to tune it out. Too much $$ right now for a dyno tune ! Let us know what the dyno tuner ends up doing to remove it...

 

They are a very reputable shop and tuner. I would let them know of your issue. Should be an easy fix.

 

with a modified muffler(like completely open) it will grumble even with a good tune. and yes valley was the guy for dragos b4 they got their own dyno.

 

correct

 

Check your exhaust flange bolts. Mine were loose allowing oxygen into the pipes that caused combustion/pops.

 

Thanks everyone~ This forum ROCKS!~

 

If it didn't do it right away then it's on you. If it did it right away and you didn't bring it to Valley's attention well then it's up to them on how to handle it as you really should have told them right away that you had issues. They can't fix something they didn't know was not right. Coming back 6 months after a tune was done and saying it doesn't run right is kinda weak. If they find a mechanical reason this is happening they have EVERY right to charge you for all diagnosis time and repair charges.