sorry it took so long for me to anwser you. my car had no power in the mid to upper rpm's (sounded like it was missing when it finally got 5000 rpm.)sounded like a different car all together my friends said it sounded like i stuck cotton in my exhaust. I had no problems with them at Campbell's they took my car on a wed. at 5 pm i had it back fri. at 4 pm. good luck with the car...........
