14psi only made 250 on a Mustang dyno? What size turbo were you using? We generally use a T3/T4, .63 ar, 50 trim, 450's, and a fuel controller, and pull 350. Guess you're running a smaller turbo. I like RB20's, and we're one of the main reasons there are so many people running around the southeast with them. Cause they are still proven to make power, not everyone is that worried about an extra 50 pounds, I even know someone pulling out their RB25 to go with a RB20. There's about to be another RB20 that will be out on the road making well over 400, closer to 500. Get you a Power FC instead of a SAFC2, you will make more reliable power.

E