I installed this on a 3/4 ton Suburban and saw a definite improvement. I have a 454 and adding the K&N kit improved my fuel economy by almost 2mpg and I noticed an additional increase in horsepower. Installation was easy, which says a lot considering I'm far from a mechanic. When installing, I highly recommend taking the time to give the throttle body a good clean. This is the second K&N kit I have installed (select vehicles) and both times I have been pleased with the results. Definitely worth the money.
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