apexi safc posted by JoshE300zxTT on March 26, 2011 at 02:01 PM
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First, buy a wideband 02. Next rent the dyno for an hour and make runs to improve upon the a/f until it's perfect. Ive witnessed excellent gains for one that is properly tuned. Sorry I cannot give you a starting point on the afc corrections b/c every car is different.