The 18G turbo seems to be somewhat of an enigma. Turbochargers.com claims it will support 400hp; more than the Big16G or any of the TD05 comp housing hybrids. I have never seen firm numbers on the flow... (ie 550cfm for the Big 16G). It is a popular upgrade on DSMs in CO but one user on CODSM claims to have maxed his out and his car is only running 13.4 in the 1/4th. Does anyone know the flow rating? Will this turbo support 400hp? I know that opinions on this turbo are low and I don't plan on using it but I still want the info.