Hey guys I was looking to add some more boost to my Whipplie 2.3 Gen II. Currently I'm running a stock 3.5 pulley and stock caged lower making about 14 psi. I just wanted to add a couple more pounds boost so should I just bolt on a 3.25 upper? My tuner is recommending adding a 2lb lower, is there any benefit from adding a lower over just bolting on a new pulley?