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 Review

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 am impressed with the difference in performance, even here in California with its stricter air quality regulations K&N kicked it out of the park! My '04 Trailblazer LS sounds 'evil' and I immediately noticed an increase in performance. Easy installation except that a hole must be cut in the round tube to insert the sleeve in preparation for the bend. With the specified 1.25" hole saw the hole was too small so I had to use my dremmel to sand and enlarge the hole and then use some lithium…

I LOVE this thing so much. It was actually pretty easy to install, the only tricky part was a 1-1/4" hole I had to drill, but other than that the install took about 30 minutes. I have an 04" GMC Envoy with a 4.2 -litre I6 engine. And it fits perfectly. My face cracked a big smile as you hit the gas pedal. The beautiful roar that came out of the engine was just amazing. I've definitely felt the increase in performance and it makes your car a lot louder Sounds SO good I can't even explain it I…

My kit was missing the main hose (coupling connecting the intake housing to the throttle body). nowhere to be found The intake manifold was also badly dented in several places. Both holes connecting to the throttle body and filter were visibly deformed like they were pinched or something. It seems clear that I received a used kit that was returned by another buyer. The K&N part itself is well made and I'm happy with it, but it's definitely 1 star for me. Buy this part, but definitely do not buy