My first CA had an SR turbo on stock boost. It was enough to stay ahead of a stereotypical Mustang GT (intake/exhaust) with a d-bag driver.

I'm only on 11psi now, running RB26 injectors (444cc) and a ROM-ECU. She's a bit on the rich side, though. Unlike most 240 owners with stiff coilovers, I'll run from a dig. It doesn't matter to me, haha. I've got a few things to get before I can start trying to set up races though.