Chonie

Any previous experience with eboost mods? Hi Guys, Just looking for some ideas on what could be causing an issue with my boost system. I've just had my R33 tuned and we have basically rebuilt the entire engine from scratch. There's mechanically no reason why this car shouldn't run 1000hp or more happily (as far as I know). However, I keep maxing out at approx 500hp. Boost system is creating the boost, but isn't actually using it as far as I can tell. I know it's going to be something really simple, but i'm stumped. Any suggestions? Cheers!