It is what it is
Seeking information because I am a new Vrod owner looking to max the potential/performance of my 03 Vrod but have a few questions. Currently I have SE exhaust, K&N air filter and PCIII power commander; looking to add SE slipper clutch and SE ported heads; once completed what should I anticipate as for results for money? Should I or must I redo my cams and/or pistons to get maximum HP gain on the pending upgrades? ECM stock vs Stage I what is the deal?