Review on K&N Cold Air Intake Kit: Maximizing Performance, Boost Horsepower: Fits 2002-2005 Chevy/GMC/Oldsmobile (Trailblazer, Envoy, Bravada) 4.2L L6, Model 77-3036KP by Joshua Overacre

I installed this air intake on my 2005 Pioneer I6 EXT LT. Installation took 30 minutes including removing the old airbox and resonator. Make sure the resonator is removed. Installation requires basic tools, sockets for 8, 10, 13mm and a Phillips screwdriver. After installation I took it for a test drive and WOW! Sounds absolutely incredible! I calculated the gas consumption before and after. I increased consumption from 16.9mpg to 21.2mpg. the same driving style, the same gas, the same speeds. I strongly recommend you to choose one for your gas guzzler!