i never had a problem with the gemini radiator when running an a15, but after fitting the turbo setup it wasnt capable of keepin it cool anymore, i've now just installed what i think is a pulsar radiator, i still havent got that working perfectly but with two thermo fans hooked in (1 10" and 1 12") with a bit of mucking around it should be fine

just my experience... a mate of mine is having trouble with a brand new gemini radiator on an a-14.... but i guess there's always other factors that could be influencing

i'd say use a proper thermo control and a relay to wire in the thermo fan so its only sucking power when it needs to

im actually looking at fitting an oil cooler as my turbos are oil cooled only