Ryan’s RX-4 has undergone a few changes lately. Primarily the 13B rotary engine now features a Promaz billet front plate as well as a FuelTech FT500 computer. On lower boost we managed to run a personal best pass.

Mazda RX-4 coupe
Promaz 13B rotary engine bridge ported
Promaz billet front plate, billet water pump bridge-ported
Garrett GTX42R turbocharger
FuelTech FT500, E85 fuel
Samsonas sequential gearbox
Direct Clutch Services twin plate