Funny you ask about pushing it further. This is right 10.49 compression and I have run this cam with the HD stage III kit which is higher than this kit.
This kit is stock injectors ( they where not even close to 80%) stock valve springs so really what my goal is to have a complete kit with map on the ex systems that we have tested for under 1675 complete minus EX air cleaner and tuner. The rest we supply , T/B head work gaskets cam bearings, push rods and covers. so the AVG guy can bolt this kit on and go. Options would include a flat top piston bore and hone + 10 piston if the current engine has excessive clearance or been over heated. Upgrades could also be new guides and valves again for the same reasons.
On the 2-1 pipe I have seen pretty much the same power numbers. The Twin cooled test bike at this point will take on more compression and run as cooler or at least be more temp stable.. At this point I am not having any issue with having to pull timing to show the power any further advance is not resulting in more power.