Well, for what it's worth, until 3 weeks ago I had Berk HFC + Berk CBE and stock intake with Cobb post MAF hoses. As far as I know I never saw the A/F ratio go over 14.7. Since then I swapped the Berk HFC's for the stock cats and the A/F ratio remained the same. But I'll pay more attention tomorrow during my drive to work to see what the A/F ratio does during WOT. I'll report back later!
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Black Fangs // Black rear Valance // Berk CBE // COBB post MAF tubes // K&N drop in filters // Setrab Oil Cooler // Stillen Sway bars // Z1 SS brake lines // Stillen brake cooling kit // Harness bar //
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