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Old 02-24-2008, 01:15 PM
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it should have 4 O2's, left, right, 1 before and 1 after the cat.

that is the "SFI" fuel injection, 96+. it has 6 injectors in a central block.

"CPI" has 1 throttle body type injector in a central block. that goes out to 6 poppets.
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