keep the airbox std and try the 20184dyno map, remove the airbox snorkel and use an after market airfilter (add more air flow) I had the dyno tune done here in OZ I am now running it with some ignition timing changes Too reduce popping on the over run, did a cut and paste of the ignition map from a Bonneville ! works well only some minor changes in the low throttle position around about where the pollution/noise dip is in the mapping !
08 release of the 09 america Mods done include :- true HID xenon headlight and spot lights (no night time dark rides with these suckers LIT ! ) Foran slash cut pipes (short loud) No SAI (removed) sai ports blocked off with subaru sump bolts,No oxygen sensors (swicthed off tuneecu) 10mm raised longer rear shocks (IKONS) heavy duty front springs with compression damping emulators, bike sits 30mm higher and handles well( I tow a 200kg+ camper trailer) Just installed an air horn made by STEBEL 134 decibels !! 56,000 klms on the clocks now (35,000 miles) just under 60Hp at the back wheel.
