Thread: P0420 code and white on manifolds...

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  1. #1 Re: P0420 code and white on manifolds... 
    GXP Level Member BwolfGT's Avatar
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    If that cat is REAL bad that could be causing the manifold to glow.
    1998 GP GT - Topswap - Ported M90 - N* - 4" FWI - Poly Mounts - 3" DP - 180 Tstat - Alt. Rewire - 3.29 gearing - Full Exhaust - Custom Tune
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  2. #2 Re: P0420 code and white on manifolds... 
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    The no-fouler did the trick on my ex's car. There's at least 100 miles on it thus far and no codes. We don't have emissions here so I'm not worried about her running it catless.
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