Why in the world you want to pick on us?
Not everyone runs by the same rules and some places are allowing more than others..
Without the actual rules I myself couldn't recommend any part or modifications..
If those are the rules they still have a lot of loop holes due to variations of the engines..
Go buy 10 engines.. Remove govenors.. Install pipe and dyno.. The outcome will probably show you 2 of the engines are very good,, another 2 will be boat anchors and the other 6 in the middle.. With my luck I know what I'd end up with..
.. But heck I'm just out there to ride around..
You guys do realize the best performing weenie pipes cost near as much as the entire engine..
Don't need to add aftermarket parts to make them run better either..
And the magical question is >>> WHAT"S STOCK when no one has measurements to go by?
BTW we don't mark our carbs when someone sezz they have a claim rule...
I would have never spoke if our products wasn't brought up..
As mentioned,, rules are different all across the USA and we have to know them when talking to people.. WE don't like the intentional cheating either and our business has been based on that since day 1 (1972)..