However a spring activated bypass was cheaper than a thermostat bypass and you don't really need the oil cooler for just tooling down the highway. Most oils need to be up around 200F, if you had your oil cooler flowing all the time you'd probably be way below that. If memory serves I see 60psi once you get up to around 4000rpm, which is fine. That ensures that you only are cooling the oil when running high rpm and presumably hard into the boost. The fact that you're running the cooler from a cold start is a definite down side but from the ~85psi I see it start at it's down to sub-60psi in a minute or two.
The best route would likely be a oil cooler built into the radiator but the stock system isn't hurting anything.
