cheers 4 the help but what would b the cause 4 it 2 only boost at 4psi without the bleed valve,if i fit a -31 actuator will that make any difference,the turbo ive got on it bolted straight up but the inside diametre of the inlet side of the turbo that comes from the air filter is bigger than the turbo that i took off so would i have 2 get an actuator 2 mach the turbo or r they all the same really