1. how is your gas mileage in the city with aggressive boosting? Painfull at the pump 13-15 mpg 2. do you feel a difference between sport/touring? honestly, can't really distinguish the two. yes--sport mode is more stiff (insert witty phalic comment here) 3. is it safe to say that i don't have a significant boost leak if i'm hitting close to 14psi and holding it strong? yes 4. the z came installed with an hks turbo timer. is 30sec sufficient or should i keep it a full minute? Technically, you don't need a turbo timer...since our cars have oil cooled turbos...I have one because it makes me feel all warm and fuzzy inside...plus I like to walk away from my car while it is still rumbling..it sounds cool 5. will i get more power with a boost controller if i'm already hitting close to 14psi? a tick below the 14 mark. Yes...mine is set to 15 psi...anymore and I get nervous about blowing up the turbos 6. how much of a difference in feel with aftermarket intercoolers? what about aftermarket exhaust? Night and day! 7. bov. what's your fav? no flames please =) I hear the Turbo XS RFL are nice...
