Cat question
09-03-2009, 03:29 PM
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Cat question Im about to do a header swap pretty soon. Just wondering if there is a good enough cat to replace the factory cat. I heard OB2 cats would work fine, just wanted to know if anyone has replaced theres with an aftermarket legal cat. that still passes smog.
Joey J.
Joey J.
09-03-2009, 03:36 PM
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if you are doing LTs there are a few issues. first off, its extremely hard to pass with LTs and a catted y, especially if you delete the emissions equipment. second, if you do get it tuned to pass, you will fail visual. so i would just do the LTs, get some bullet cats to quiet the exhaust down, and buy a smog. just my .02
09-03-2009, 03:44 PM
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im not worried about the visual check, thats the least of my worries. Its the sniffer that im more worried about. I want to use my factory cats but not sure if they will fit under my car after i install the L/T so i wanted something to replace them but that works just as good. Would the bullets work good??
09-03-2009, 03:53 PM
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Hey HITMAN!! thanks for helping out dude! I dont mind exhaust noise, i just need a cat that will clean up the emissions thats all. Just pass smog and take out and wait 2 more years. Anyone else have experience with an aftermarket legal cat that still works as good as the factory cat??
09-03-2009, 08:24 PM
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I have the mods in my sig with removable Magnaflow cats for the duals and I pass (read: legitimately) smog every time; generally with better results than my family's other cars.
Un-tuned.
Un-tuned.