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Old 02-23-2001, 05:35 PM   #16
Scooby Newbie
Member#: 4432
Join Date: Feb 2001
Location: Long Island, NY

On my 99 Regal GS, as with all OBD-II vehicals, there are also 2 O2 sensors. One in the downpipe, and one after the cat. It's there to check the efficiency of the cat. When I eliminated my cat, I installed a O2 spoof made by . It worked flawlessly for my GS, but I don't know if it'll also work for the Subaru....
I'm about to sell my GS, and just put the cat back on. I was supposed to sell the spoof to a buddy, but I'll hold onto it and test it on the WRX.
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