Quote Originally Posted by Andy Bettencourt View Post
That is a completely made-up piece of crap rule. WHY IN THE WORLD DOES 30% APPLY IN ITB ONLY????? It makes zero sense, made zero sense and is a big pile of FAIL.
Personal opinion coming here: All cars in any one class should be treated the same, as long as the significant elements are roughly the same. Adders and subtractors exists purely to take into account things that are exceptional for the class in question.

That 5% difference for multivalve engines is effectively just an adder, albeit a percentage-based one instead of a fixed-value one, like FWD is in Process V2. Based on the rough "average ITB car", its value is +/- 90lbs.

So the question is, is a multivalve engine something that's exceptional enough in ITB to warrant an adder? It does appear to be a fairly abnormal trait for an ITB car.

But despite that, In my personal opinion, it still doesn't warrant an adder. That's because the advantage gained by the fancy head is already accounted for in the published horsepower figure.

It's the same way I feel about any engine-related adder. Adders should be to cover exceptional items not covered by that stock horsepower number.