i have been throwing codes with my b16 lately fixed serveral of them. But today code 17 showed up which is the vehicle speed sensor i unpluged the plug today to see if that would fix it but no. and i guess this is what is causing vtec not to kick in but i had it hooked up to the computer and it was showing up as engaging at 5500 rpms with the stock program. any ideas of a way to solve this problem. i am going to put a new wiring harness in tommorow to see if that helps let me know if anyone has a solution thanks