If you've been considering getting these get them I got them for my 07 Dodge Charger. These have done more for my car than I could have expecting. No more throttle lag and a definite increase in horsepower and torque. These things have really brought my car to life. I couldn't be happier with them and their is a trick to installing without throwing a code. It involves spark plug non foulers. Luckily I did my research before I installed them and I have no codes. It's an easy process. 5 of 5.