ok now i'm glad i got the vtec controller. Because now i'm getting a Skunk2 intake manifold which by doing this now gets rid of the butterflys that engage at 4400 from the stock manifold so i would just have vtec engaging at 6000rpm. Well since i have a vtec controller i can turn vtec to engage whenever i want. So i can have it engage at the point where the butterflys engaged. Ok i'm happy now. Oh and by getting rid of the butterflys i will have a deeper exhaust tone so i'm told. Which i'm glad . Just letting you know that there is a good reason for it. But if you don't plan on getting a new intake manifold then i wouldnt waste ur money on getting a vtec controller. Just my opinion though.