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Old 04-13-2007, 01:20 PM   #5
IHateHacks
20psi boost
 
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If you have a sub O2 sensor and you remove the cat, it will definatly throw a code. They sell something called an O2 simulator that is specifically designed for cars that have a sub O2 and a test-pipe. It replaces the sub O2 and plugs into the harness. I don't know if they sell them for Mk3 supras though.
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