So I just installed my Koyorad N-Flow on my sr20det, I was expecting for the new radiator to cool everything down but instead it still running hot

Basically it still running the same temperature as if I had my stock radiator on. I flushed the radiator, switched on the heater to let the air out which alot of bubbles came out, and filled it to the top with coolant in the radiator. I took the thermostat off awhile back, so I know that's not the problem. No leaks anywhere in site. Wtf is up with the heat?
