[regal]

OK I got my JY WRX oilcooler and my car back from the shop.

I don't know if think of T-ing off the heater hoses will be consistent because when you turn the heater dial to red most of the coolant will travel thru the heater coil rather than the oil cooler, then with the heater off the oil cooler will get much more flow.

Then again when you need to use the heater you probably don't neeed as much from the oil cooler.