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Old 02-27-2010, 12:03 AM   #2
12psi boost
Join Date: Feb 2007
Location: Georgia
Posts: 359
mirage83 is on a distinguished road

For the high HC check plugs, EGR, vacuum lines, stuff like that. Even your timing being off some can raise HC.

For CO, check your O2 sensors/wires, air filter. The TPS, coolant temp sensor and/or the AFM could also be responsible.
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