The housing itself shouldn't matter.
How's your LPR set? If it's too low it might not be letting enough air through. Are your hoses connected correctly? LPR hose should go to the middle barb, front barb to front of ram, rear barb to rear of ram, least thats how I remember it, I don't have my gear with me to double check.
'07 Angel G7 Joy Division
'05 Dye DMC /w X94 bolt
'05 WGP Black Magic /w MQ2
'03 Dye Matrix /w X93 bolt
'01 Shocker Sport Turbo /w old school Maxflo 4500