Google seems no help here. Some place's say 40 some 42. What is stock? I thought they were 42 and have ordered some 45's from Eddy but now am wondering if they will be too big?. Currently running 3 1/4 turns out and almost have popping stopped. Was 2 1/2 but was just awful noise on the over run. See my signature for other settings
05 Speedmaster,Reverse Cone Shortys,Thunderbike AIR Kit,K&N Air Filter,Snorkel Removed,Dynojet Stage 1 Kit(126 main),Needle-Clip 1 From Bottom,42 Pilot,NGK Iridium Plugs,Progressive Springs,Hagon 2810's,Barnett Green Springs,TTP Safe-Start,MOSFET R/R
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