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H2AB4 code after COBB firmware updgrade and IC install
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11-19-2012, 11:21 AM
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Jeff@TopGearSolutions
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PSAFF is normal. Not sure about the HsAB4 myself but it's old, "H" = history. Clear and drive some more.
9/10 with intercooler installs they produce the 30FF which is a boost leak. Most need to tighten down the clamps more.
Appreciate
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