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dc headers, do i need a defouler ?

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Old 10-26-2007, 09:57 PM
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dc headers, do i need a defouler ?
will i need to purchase a defouler to run with the dc headers to avoid a check engine light ?
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Old 10-26-2007, 10:13 PM
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i think you only need a defouler if you are running a high flow aftermarket catalytic converter
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Old 10-27-2007, 12:03 AM
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I have DC version 1 and no problem with a check engine light at all. As tsx2nv says... usually only with a high-flow cat.
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Old 10-27-2007, 01:30 AM
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no you shouldn't need a defouler. I'm running CT header and RT cat and still no CEL *knocks on wood* But no I don't think anyone has gotten a CEL with just a header
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Old 10-27-2007, 07:25 AM
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you're good
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Old 10-27-2007, 01:09 PM
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awesome thanks guys
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Old 10-27-2007, 03:13 PM
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I'm installing Topspeed headers and RT cat tomorrow and I just picked up a sparkplug defouler at Autozone to run in the RT cat. Don't plan on using one in the header though (in fact I think putting a defouler on the primary O2 sensor is actually a bad idea in that it will mess up the A/F ratio...)
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Old 10-28-2007, 01:43 AM
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yeah i just got my DC headers shipped to me =D hoping there wont be any problems... btw, how long does installation usually take? and can you do it yourself as long as you have a lift? sorry im noobbbbb
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Old 10-28-2007, 11:23 AM
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yeah i just got my DC headers shipped to me =D hoping there wont be any problems... btw, how long does installation usually take? and can you do it yourself as long as you have a lift? sorry im noobbbbb
Per JTSo's thread....

I took my sweet time during the entire install to take pictures and got it done in about 3 hrs. If I had to do it again, it should only take 1.5 hrs.
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