Quote:
Originally Posted by Detoxing
This.
Tunning is something you do once you've added other modifiers because it's sometimes required with increased air/fuel. I mean, if you're just adding a new air intake and some exhaust mods, it probably doesn't need it.
Otherwise, the factory settings are about as dialed in as it gets.
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I think the exception to this is factory tuned turbo cars. My 2011 STI dyno'd 230hp/260tq at the wheels. Added a cobb accessport stage 0, which just leans the fuel out a bit and holds boost a bit longer, and was able to get 255hp/300tq. That was just the out of box map from cobb stage 0, no 'extra' tuning, just flashed and dyno'd. The WRX and STI are notorious for running rich as hell from the factory.