I just put on the 3/4 system last night from looney tunes. All i can say is it really woke up the maverick. I know people think its faster because they can actually hear the mav more put befor the system my tires would not break loose on the cement. Now it will lay a 30 ft burn out all gas since i put on the kit. So yay it works. and wow are those cats restrictive and heavy all post pics when i get them .