What core is your Civic rad Taggy? just i had a single core civic rad on my old glanza and found that the rad fan was coming on way quicker then what it was useing the OEM rad!! Edit just had a look in your build thread you have the same rad as what i had! Im not to keen on them at all maybe you could do with like a tripple core? that could of been the reason why you boiled the water!!!! And yeah Adam i agrre for the price of TD04's i would be so worried either but when you are paying silly money for a new turbo then it would be best to use the water feed!..After all every little bit of cooling a turbo can get give it!