The Dynapack's are a little generous with power, and talking of a 700hp car is the extreme end Why did it climb the roller? It's not an accurate reading if it did.
The reason i say they can't make 300bhp - or struggle to do so - is that I've never seen one do it, and I have tested lots on RR Days with various setups. VXR's are the same - they always exaggerate power claim's.
What do you think an ST with Airtec Stage 4 cooler, full exhaust system and intake should make?
Rick