Same here that's why I'm trying to find out as much as possible before I fit it. Me and a mate have a xr4i with a 24v cosworth engine with a single jet nitrous oxide systems set up and it gives an extra 50 hp, made a big difference so fancy trying it on my cosworth but obviously needs to be safer as iv spent £6k on my yb where as the boa cost a few hundred if that blows up!