Thanks for all your input it has really helped alot to better understanding what to do. I have one last question. Why should i buy a HE? i know it will keep the temps down but will i see extra gains to what i have now? Having a little loss of power on the street is something i cant really feel. By reducing the IAT with a HE and coolant seperator im not losing as much timing right? so would i in turn have gains regardless for the fact temps will be lower than they are with my current setup? Im not fussed about a little loss in power on the streets but if im infact getting a faster car than what i have now it appeals to me. If that assumption is right would i be gaining any more than a car lengths distance to what i have now?