Review on 🏎️ AEM 21-8128DC Cold Air Intake System: Boost Your Vehicle's Performance with Superior Airflow! by Marco Hubbard

I originally gave this one star because the fit was very tight and my truck was performing horribly. Well that's me, I like messing around with things so I installed it back in my truck to make sure I don't mess anything up. I recommend installing in parts. This made it smoother and seemed to fit better that way. I found that the reason my truck was performing poorly was that the intake air sensor was not installed properly. I made sure it was all the way in and that made all the difference. The truck worked great and was 100x better than the first time I installed it. You can actually hear the turbos working and in my opinion the throttle response is better. This alone made the truck faster. I can illuminate the rear wheels better than before and I have to be careful what I do in order not to attract attention. In terms of performance, it's hard to say. These eco-boosters have what is called an intake velocity density sensor and are more responsive to CAI than most cars (mass air flow). We're not talking 15 or 20 hp here, but maybe 4-6 is reasonable.