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The Satanic Panic
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Discussion Starter #1 (Edited)
alright i just put a downey header on my 2.7 L with a 2.25" piping for the muffler which is what downey recommended and the check engine light came on, i felt underneath around the flanges and the one from the cat to the muffler had a bit of leakage in it, im curious to know if this is the case or if anyone had to replace their 02 sensors on a similar setup
 
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