The turbo tank needs the lower pressure cap since its job is to overflow the coolant into the overflow tank then after shutdown it will suck it back in.
Subaru 1 3 bar radiator cap.
Subaru 13 bar radiator cap subaru limited 2015 st4511355010 rallysport direct 1 888 45 rally.
For example you would run a 1 3 bar cap on the radiator and a 1 1 bar cap on the turbo tank.
The higher temperature allows the cooling system to absorb more heat.
Keep your engine cool by upgrading to the cobb 1 3 bar radiator cap this higher pressure cap increases the effective boiling temperature of coolant in the system.
Avoiding boiling makes head gasket failure less likely.
You are suppose to run the higher pressure on the radiator.
And only if you have an aftermarket.
The 1 3 bar radiator cap will improve the cooling efficiency on the subaru wrx sti.
Cosworth 1 1 1 3 and 1 5 bar high pressure radiator cap.
I have read a few topics here and there all over the internet with advantages and disadvantages but most have been heresay and there arent many facts to back up what people have posted about in their.
Use the 1 1 bar coolant reservoir cap for the coolant expansion tank which sits atop the intake manifold on every turbocharged subaru we support.
Subaru genuine subaru radiator cap forester impreza outback legacy ej25 ej18 ej22 oem koyo sk c13 type a radiator cap red 1 3 bar mishimoto high pressure 1 3 bar radiator cap small.
The cap increases pressure and does allow temperature to go up about 10 degrees before fluid boils but does not reduce temperature.