i am all to familiar with the boost devil, metro turbo, renault 11 turbo, cosworth. after having the cosworth and things costing stupid money to fix i know my limits. I say i want only 4 psi, but thats due to having an old metro T3 actuator that i could fit to the t15, so that would be a major load off the install and would restrict boost. This on a CGA should make what 110-120bhp? frank how much would you want for the mani/turbo custom DP?