So there are a few diff. turbo manifolds for the ms3 and ofcourse pg has a well built one they offer. It seems like these manifolds can give a ms3 owner great hp numbers for the money...why arnt more people going with the aftermarket manifolds...does it cause prablems with the ecu? 30 hp for 500 bucks seems pretty good to me..but you dont hear to many people getting these compared to down pipes and intercooler upgrades that are as much or more expensive.