Its probably not the "tuning" adding the fuel. The most common thing I see with a fueling issue like this is having the mass air meter too close to a bend. The air will have a tendency to travel on the outside edge of a bend and if the mass air meter is situated in the wrong place it can pick up additional air. If you can "twist" the meter 90 degrees you might be able to fix it.
Last edited by ivmotor; 08-14-2011 at 02:45 PM.
Reason: lernt to spel
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