Hey guys... I know very little about getting more hp from my stock '09 Road King. Was reading up about getting an ac and exhaust to increase flow, and then using a PV or similar tuner. Stuff adds up though! And I just can't find any data on how much of an improvement this makes, other than "my bike runs much better". Is there any real data... hp/torque numbers that are available to justify the cost factor? Thanks!