Quote:
Originally Posted by ncs
The stock map is very rich, so with either AP map, you've gained something, even if it doesn't show up on the SG2. You might get a pleasant surprise at the pump.
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Also the off the shelf maps leave quite a bit on the table.
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Quote:
Originally Posted by serialk11r
At heavier load the AP map is definitely going to be way more fuel efficient. Factory maps are always super rich for cooling purposes.
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I have a 2005 STi with Cobb AP. The Cobb maps are super rich too, so as not to pop any motors. I'm at stage 2 and my gas mileage is down from stock no matter what OTS map I use.