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The cooling system on a wrx has multiple paths to bring water back to the water pump.
1. oil cooler/warmer
2. throttle body warmer
3. heater core (bypass loop)
4. radiator: when thermostat is open
5. turbo cooler/ expansion tank
The amount of flow through each path is controlled by the restriction of that path.
Be careful if you add any restriction. You may not get enough flow through that path. This problem will not show up until heavy loads. (racing)
My 2 cents.
Bob
Last edited by Bob_n_Cincy; 11-04-2014 at 10:51 AM.
818S #22 Candy Blue Frame, Front Gas Tank, 2.5L Turbo, Rear radiator, Shortened Transmission, Wookiee Compatible, Console mounted MR2 Shifter, Custom ECU panel, AWIC soon
My Son Michael's Turbo ICE Build X22 http://thefactoryfiveforum.com/showt...rts-818S-Build
My Electric Supercar Build X21 (on hold until winter) http://thefactoryfiveforum.com/showt...e-Build-Thread