Quote:
Originally Posted by Simpler=Better
It might be different with the stock setup, I never messed with it.
With the 2056V I noticed a drop in temps while cruising with the vanes open vs closed. I don't remember the actual amount.
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That makes some sense with the variable vanes. If you ask for more boost, the charge air temperature will climb and the temperature will likely rise a bit to compensate.
I'd be curious if the variable vanes could be opened sufficiently to decrease the boost close to zero. At that point, you've got a naturally aspirated engine. The real question is how would it fare in fuel economy with no boost whatsoever?
The answer might be valuable to those with stock setups if it offered some fuel economy benefits.