I have one of these babies too on my rb20...made 202kwkw at 15psi with ths usual support mods...exhaust, fmic, fuel pump, z32, injectors and remapped ecu...theres a fair bit more left in it i just need a new front pipe as mine is dented and would be restricting flow...also have a 3" metal cat coming in the main to replace the sh!tty 3" cat i have...will turn the boost up and do another tune...then we'll see how it does....