I believe the thing the ITAC criteria misses is considering the original hp per liter. Sure a 105 hp 9 to 1, 16 valve honda CRX that was limited to 6500 rpm might be bumped up to 130 hp with at 7500 rpm and headers and tuning. So big deal, its now .85 hp per liter.

The problem with the rules is how they treat an engine that is already 8200 hp readline and 1 hp per liter such as the the 99 civic si, del sol VTEC, S2000 or teg type R. How do these engines get to 1.25 hp per liter? Do you expect them to rev to 10,200?

My point is the ITAC assumes all engines can get to about.,9 hp per liter under the rules, the problem is cars shipped with engines at 1 hp per liter such as Honda S2000, VTEC or Type R are really badly classified. As the rules sit today, these cars have little development potential.and in fact are classed about a class above their potential when considered on a hp basis.