Review on 🔫 AEM 21-8311DC Brute Force Intake System for Jeep Wrangler TJ 1997-2006 4.0 L6: Gun Metal Tube, Red Dry Filter, Charcoal by Owen Houser

: very easy to fit, looks good, increases airflow into the engine. (Photos taken when I first installed it as it's a lot dirtier now after 25,000 miles.) Long story: First, it won't work like a true cold air intake. Its position behind the passenger side light is actually a "negative airflow" area, meaning the air pressure there is actually slightly lower than outside the engine bay, and since it's there the air stays hot. This allows the engine to deliver smoother air to the engine at a lower cost. It is enough that this is actually logged as a fault in the ECU (mass air flow sensor overvoltage), which actually means that more air is being drawn into the engine than expected. more air equals more efficient combustion, which means more power. However, you won't get an easily noticeable increase in performance unless you also get a more efficient exhaust. Of course you can force more air into the engine, but your power output will be limited by the exhaust. If you do both, my Jeep personally added about 25 horsepower on the dyno. to store. Also, to maximize the new efficiency, clean the injectors and fuel system with a fuel additive and use medium quality fuel. Last but not least, be careful off-road. The cleanable filter is great for dusty trails and sand. However, this reduces the pickup by a few centimeters and also makes it a larger target. So be careful when driving through deep mud puddles. Avoid "curvature waves" going through the hood or water entering the pipe (although the curvature to overcome the engine is high enough to avoid flooding). Bottom line this is an amazing addition if you are careful with deep water and can increase exhaust flow and clean the engine.