I can agree that people dont get much bang for the buck when installing an intake or exhaust on a all motor car I4 car. i can see the possibility of gaining a nice amount of horsepower with an SAFC2. you did not factor in the COST of tuning on a DYNO and a good wideband o2 setup to tune with. this would now easily put you in the $500+ range for that 15 extra horsepower.