Possibly the easiest install Ive done. Easy because everything fits properly and is straightforward, and only fits one way. Be ready not to be abke to hear your bluetooth over the intake noises, and you will quickly loose interest in your radio because the sounds are beautiful lol. I cant give official gain numbers, but I can tell you I spoll MUCH faster, and my car doesnt seem to be struggling to breathe. Best $160 you will ever spend on your car.