This graph represents JTran single turbo 6-7 psi vs GTM stg 2 @ 6psi, both cars still needing fine tuning, etc... Twin turbo will always come on faster but watch out, single turbo not far behind.
RUN 1 = GTM; 380.811whp and 315.702wtq
RUN 2 and 3 = JTran; 385.575whp and 339.400wtq
