Originally Posted by tabetha

You cvan run cossie management on normally aspirated but pointless, it is not the best system anyway, I am changing over to a EMERALD 3d ECU.
You would be much better off with a aftermarket ecu, the reason the zetec may not seem so good is because it was designed around a whole different aim ie emmisions and as low as possible, whereas the cossie lump is only a rusty old pinto with a different head, basically but head work and turbo is what does the biz.
A NA engine of the same power will always be slower than a Turbo one due to torque differences, but can still be made very fast, but at a much greater cost, as cossie has most if not all the major components already needed.
tabetha