I have an ATS hiflow for sale, easily run 20psi + with this turbo.
My car ran a 12.6 on 15psi with this turbo, i have time slip to prove.
It comes with all the gear, vlt exhaust manifold, dump pipe, oil and water lines and ill even throw in a boost controller and the inlet setup with a pod on it.
$1000 ono. very very cheap, has to go to make way for the new setup.
brad
get up there
i can vouch for this turbo, been in the car with it on only 10 psi and it goes ****ing hard, been in all of brads cars and a few very powerful cars and this turbo pushed brads gold calais very hard in comparison.
i havnt ran 20psi, thats what the turbo is built for, bluey did a 10.9 which i believe is the same turbo specs.
a microtech lt8 and some 13b injectors should see you running 20psi no worries