Nitrous Express Proton Plus Nitrous Kit w/o Bottle (20421-00) 1619 check the CARiD reviews and

check the CARiD reviews and read what the customers think of K&N porducts

Get a louder and much more aggressive exhaust note without any increase in drone with the valves closed

While an enthusiast typically wants better boost response and more power

The tested AWE Audi 2

Nitrous Express Proton Plus Nitrous Kit w/o Bottle (20421-00) 1619 check the CARiD reviews andProton Series nitrous systems combine performance, durability and value in a compact and easy to mount module. Proton systems contain high quality, made in the USA, solenoids that are capable of producing 150 horsepower to the wheels. The black anodized aluminum housing not only looks great, it pulls heat away from the solenoids for extreme durability. This Proton Plus system includes jetting for 35HP, 50HP, 75HP, 100HP, 125HP and 150HP. This system