(please anyone correct me if im wrong)

like chip said they run a restrictor which limits top end power, but to get such massive mid range torque they run a massive boost spike which then tails off at higher rpm due to said restrictor. also the higher compression isnt such an issue as it would be on a road car due to the fact it doesnt rev very high. thats the way i understood it works anyway?


id love a go in a proper rally car, must feel sooo fooking quick!