If you want more than approx 280rwkws then a larger injector is required. Al@n, As for getting 320rwkw with my above listed mods it will depend on the dyno really. If the dyno reads low then 310 may be it if it reads high then maybe a little more. Your car may well make 320 on other dynos. Can't really compare between different dynos. I'll be getting a dump pipe, cat and intercooler fitted with another tune Monday so I'll post up my results latter in the week. Benny