if you don't have the standard airbox, then there's no need to buy it...they are just as expensive as the Injen CAI...get that instead

i can bet your air intake is sucking in hot air for sure...
unlike the DC2 engine bay, the k20 engine is in the opposite direction, and the location for your air filter is right next to the exhuast manifold...
no matter how many people tell you just putting on a heat shield is good enuf for that kind of setup...it is not!