Hi put some big shot staggereds and a screaming eagle heavey breather a/c stage one setup on my 103 fat bob , im using the sepst tuner anyways got a dyno from a indy in my area and even with a dyno run that cost me $400 the friggen thing pops bigtime on decel, the bike runs fine but is popping even between gear changes and when ya back off,I know there not everyones choice of pipe,and are basically a straight through setup even with the baffles, has anyone dialed out this problem properly with the sespt tuner or have a map they wouldnt mind sharing if not its going back to him to sort out,cheers

No air leaks in the system....

Big shots shouldn't be too bad to tune, they at least have the the power chamber don't they?

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Tell me the model/year/mods

Good result, great to see the forum working well, well done Retroman