Sorry to be a troll, @$$hole or whatever you called but I prefer a dyno before and after the install. You can hit 150mph, have 40mpg, feel the engine smooth like a not started engine but if you dont post a dyno before and after the pulleys, nobody here will believe that a pulley kit helps our engine.
If everything goes fine I will be doing that type of review (before/after dyno with pulley kit mod on the K20Z3) on the upcoming weeks stay tuned.
Just be ready this will be a looooonnnnggggg thread.