Originally Posted by BooGTS
no, but it uses the energy that would be just dumped through the exhaust pipe and into the atmosphere so you can't say the engine has to produce more energy to spin the turbo. www.howstuffworks.com
I guess you misunderstood my statement then. I wasn't saying that the engine had to produce more power to spin the turbo, I was simply curious how much pressure was required to spool the turbo.