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It's possible that throttle body is dirty or the plate is closed too far. Check that out. If it's dirty or closed too far the PCM will add timing to compensate once it maxes out the IAC, which will skew your HC readings.
Edit: Also check to see if your IAC is clogged/dirty.
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1998 Z-28 - SLP lid - Ported TB - LS6 Intake - Dynatech SS headers/Catted Y - Magnaflow Exh - 3.42 - Yank SS3600 - UMI weld-in subframe connectors, Adj LCA, Adj PHB, Q1A TA - Bolt-in Relocation Brackets - Strano springs - Koni shocks - 17" C6Z06 wheels - 326HP/335ft-lbs - 12.35 @ 110.41
Quote:
Originally Posted by Blackbirdws6
I can appreciate a dream but this person needed some real friends.
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Last edited by The_Bishop; 05-31-2012 at 01:29 PM.
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