i have an efi rs engine in mine roughly the same setup, i have beige injectors n a 195 chip with ofab. had it dynod a month ago at 205.7 bhp 189.9 torque n 15 psi, he told me i can get 250 bhp as it is easily, but as he wasnt sure if my pistons n rods were upgraded, he said hell leave it at that! he said if i want any more than that i need green 803s n omex 600 ecu setup! hope that helps mate