The 13B-T has a single twin-scroll turbocharger along with the 4-injector gasoline injection in the 13B-DEI. You can find not variable intake and 6PI devices. The 13B-T engine attributes the four port consumption style which similar to early 13B engines from 70's. Purchasing a Mazda RX-7 FD from the JDM https://johnf516acn6.bcbloggers.com/profile