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      05-05-2014, 11:48 AM   #20
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Originally Posted by ASAP View Post
I guess Porsche, Nissan, Mitsubishi and Subaru have all not figured this magic out yet. All of which build turbo track cars and have many mounds more years in turbo gas motors than BMW. My #1 guess is that this was done for product differentiation and nothing else.
Interresting to note that the less "performance oriented" models from BMW use air-to-air intercoolers...

It is a question of specific heat properties of fluids. Water can store 3300 times the quantity of energy for one degree of temperature elevation by volume compared to air (about 4x by mass). You need a lot of "air heat" to heat soak a water system...

Last edited by CanAutM3; 05-05-2014 at 12:01 PM..