...you seem to want noticable gains...instead of getting the most from your set up. A tune can provide a night and day difference. if your tuner thinks they can get extra whp from the setup you have by adding 3psi from the fuel lines, that could make a huge difference..after all you dont have anything thats really going to make hella power...if you want super noticable gains i suggest either a tubo or nitrous, there are some kits you can use without a tune but even then, a tune will only yeild more gains.