GT2 Mazda 13b turbocharger part # update
#33437 from Grand Touring Committee · Rule change · TB 23-01 (2023-01 Fastrack)
In GT2 Spec Lines, Engines - MAZDA, 13B Street / Bridge Port, change Notes as follows:
"Part# EFR 70/76 76/70 Turbocharger-42 46mm"