im going to be installing a steeda #19 cam, 24lbs injectors, tune maf sensor for the injectors, gt40 heads, 1.7 rr but my question is do i need to do anything for my ecu? im hearing all different type of answers, some saying that i need to get ams ems, the stock should work fine, use a cobra(94&95) one, A9L(i think that it) or a custom chip. Which is probably the better one to go with? remember cheaper the better and i wont probably do anything else besides adding a 100 shot of nos. also is the ford racing extreme performance engine control system anygood?