Roush Performance 421827 Cold Air Intake Kit - 1 Pack Black - High Performance Air Intake System for Ford Mustang - Improve Engine Power & Fuel Efficiency

Easy to install. The reason for only four stars - the sound wasn't as deep as I would have thought when into the throttle.Took under an hour to complete the install, need socket set, flat head screw driver and pliers. Watched a video by cj pony parts on YouTube and this cai sounds amazing. I've definitely noticed hp gain, highly recommend rousch. Yates performance delivered on time as promised great seller.Installed it about 1,000 miles ago and I absolutely love it. The Mustang feels a bit more responsive on throttle and definitely throws you back into the seats a little harder now.If you want some quick gains that won't void your warranty, this is the mod for you!Can really hear a good good whoosh sound that makes me feel like a big strong man.Excellent product! I tried the K&N intake first, had issues with the check engine light coming on. I returned it , purchasing this a bit later. Very easy install and love the improved performance! Would recommend this product without hesitation!Aye I know it's a bit pricey but DEFINITELY worth it. You hear and feel the RoushEasy installation and makes engine sound much betterGreat product ,price and fast shipping