But water/air intercoolers are better because you have "wind chill factor" going into the radiators that cool the water used to cool the air....
Air-air also get a wind chill factor, but that is what is calculated as ambient temps. And that same factor would take to place by just having your filter it a good position where it can get some of the same air.
I am all for trying to get longer life or safer life out of a turbo, but this way is going to do NOTHING
If you wanted to help the turbo life, #1 added oil capacity is first. Larger filter, large cooler. The less the oil gets broken down from heat the longer and better it will be able to protect turbo. Or a turbo oil resivoir, lots of road race cars still use them, and street cars. Basicly a capacitor of oil that injects the oil into the feed line once the engine is shut off to kepp oil flowing until turbo has fully stopped spinning.
#2 Coolant cooled turbo if run right will always outlast a none-cooled. But having the engine cooling system more than enough to handle a system for it. Larger radiator and even a aluminum that can handle more heat.
