The filter isn't bad; it's the intake.
It's exposing the filter to tons of heat; the K&N on MANY platforms is a heat soaking pile. The hood doesn't seal anything with the weather stripping, the exhaust is right there heating up the plastic, not to mention the non-sealed hole around the tube that goes to the filter. You're literally just as fine running an open cone or a $30 eBay intake.
My point is a stock gutted airbox, with a smooth tube to the throttle body is better than that.
That's all. I'm personally using a K&N filter on my K1500 and an AFE Dry-flow on the C5. As for the GTP's I had open cone intakes. The GXP had a nice ColdAirInductions intake setup. Best one money can buy.
Originally Posted by blueguy91
