Header upgrade

General discussion area for the L31-chassis Altima, including the 05-06 SE-R models.
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Altima4AT
Posts: 43
Joined: Thu Nov 13, 2008 2:57 pm
Car: 2003 Nissan Altima 2.5s

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I am looking into a header/down pipe combo from stillen and was wondering if anyone knows if it is an easy install? Also if it will pass smog afterwards?

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Darius
Posts: 4820
Joined: Sun Mar 02, 2003 9:48 am
Car: RB25DET S14 - 665 WHP (SOLD)
Location: Chicagoland

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Yes easy, but you have to take the alternator off which is still easy.

No, it will not come close to passing emissions with both catalytic converters removed.
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Altima4AT
Posts: 43
Joined: Thu Nov 13, 2008 2:57 pm
Car: 2003 Nissan Altima 2.5s

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so the only way to pass smog would be to switch back to the original header when time comes?
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Darius
Posts: 4820
Joined: Sun Mar 02, 2003 9:48 am
Car: RB25DET S14 - 665 WHP (SOLD)
Location: Chicagoland

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Yes, or get a header that doesnt' replace the second catalytic converter. QR25 headers for the sentra are the exact same thing.
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