HOLY CRAP 200 HP must be nice I thought my Busa was fast stock hehe Hey just a question I heard from an unreliable source that ram air was good for 10% HP boost over 60 MPH what do you think that would put a stock Busa at 173 HP stock with ram air ?????
Busa does have ram air it starts at lower speeds then it kicks hard about 100mph. so it is not a matter of what a busa would be it is what it would be without the ram air. less than 150mph. ram air mods can get you some addil gains but maybe 2-3hp at the most.
You are right the ram air will not kick in on a Dyno, it will only kick in on the road, unless you blow the air in hard. Never meant to imply that ram air would work on the Dyno. Actually the book is @ 150rwhp. 175hp @ the crank The problems with Dynos are very few are the same, so you pick one that is consistent. They can vary by5-12hp, so as long as you are moving up not down.