Soo saar nooc ka mid ah weedhan oo aad u adag Baabuurta qaar ayaa lagu rakibay nooc ka mid ah mashiinka korontada, maadaama saddexda mashiin ee ugu waaweyn ay u nugul yihiin in ay dhacaan mashiinka mashiinka haddii ay ka sarreeyaan 6,500 rpm.
Dabcan, qaab kale oo adag ayaa ah "Gawaarida qaar ayaa lagu rakibay supercharger-ka nooca vane-ka ah, maadaama saddexda matoor ee ugu waaweyn ay u nugul yihiin cilladda crankshaft haddii ay ka sarreyso 6,500 rpm; superchargers waxay u oggolaadeen TR4 inay soo saarto awood badan iyo xoogaa xoogaa yar oo xoogaa yar ah".