yes I see your point.. but you need to also see that your raising your engine water temps by using your coolant to cool down turbo housing, or they using a independent heat exchanger and the other is the extra weight of coolant, pump, airbox and heat exchanger of the w\a... is the twenty extra pounds worth the 10f of cooler charge temp savings
The answer to this problem is simple TSS no holes,uses stock fresh air intakes ,no panel cutting, liquid Cooled KPA turbo, water to air intercooler and the list goes on FYI [/ATTACH]