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Originally Posted by nosro  Okay, K&N makes a filter. But in my opinion, a K&N filter causes more problems than the minuscule horsepower increase it offers (oiled up mass-air sensors, poor filtration, etc). |
That's an old wives tail. I've been using K&N air filters for years on several vehicles, including a Corvette, and have never run into any of those problems. In fact, the increase in air flow improved gas mileage and under certain conditions (cold/cooler weather) increased performance. The key is forcing cooled air into the intake. If you add a K&N air filter ($45) and a Flowmaster muffler ($60+ labor) you should be able to get a 5-10% increase in HP for less that $175, however, I don't know if Flowmaster makes a muffler for the DTS.