Review on K&N Cold Air Intake Kit 57-3021-1: Boost Horsepower for 1999-2004 Chevy/GMC (Silverado 1500, Sierra 1500) 4.8L & 5.3L V8 Engines by Melvin Belton

My truck is 20 years old (model 99) and has been raised so it is big, heavy and old. Other than that, I don't notice a huge change in performance, but I do notice an improvement in highway acceleration at higher speeds - just what I was hoping for. Considering the difference on the dyno is 9+ horsepower. (and you can check out some independent YouTube videos that confirm exactly that) it's good value for money. Some people have complained that the fan shroud needs changing, but mine fits. quite well with no changes. The two pieces do touch, but they appear to fit snugly and fit exactly as intended. The instructions were easy to follow. I watched the video beforehand and just followed the instructions on the paper, no problem. My only complaint is that all four clamps seem to be slightly off center and at a slight angle, I have tried removing and reinstalling them several times to no avail. The clamps are solid, the gaps are closed by the airflow, I don't think it's going anywhere, just drives me crazy that they aren't perfectly centered, it seems like the tube gets a little more on the "long side". Material need fits perfectly.