after having a few turbo cars one of the most benificial upgrades for stock to upgrade is less restrictive inlets . Most have already have seen the gains by upgrading to a 3.5 SRI . Shit I feel the difference just removing the air scoop lol . Well the one big restrictive part is right at the mouth of the turbo . It's like the difference between sucking water through a coffee straw as opposed to a slushy straw . I'm kind of surprised none of the tuners have addressed this for the gamma motors . That's 10+ hp on most cars at the WHP .