You'll get a rich reading on the O2 sensor, so the ECM will cut back on fuel, and you'll be running lean in reality. Maybe that won't happen on the Alero due to the fact that there's 2 O2 sensors, but I still don't think it's good.
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2003 Alero GL2 LA1: pacesetter cat back, Energy Speed WAI, Magnaflow downpipe/cat, tinted tail lights, and polished letters on intake manifold.
1987 Honda Rebel 450
1967 Buick Riviera 430 Wildcat: roadworthy but needs restoration.
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