Club4G Forum : Mitsubishi Eclipse 4G Forums - 2006-2012 Eclipse Authority - View Single Post - Code P0431
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Old June 30th, 2020, 08:21 AM   #10 (permalink)
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Name: Kyle
Join Date: Jan 2018
Location: Ohio
Vehicle: 2006 Eclipse GS Auto
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You’re gonna need a racing header from RRE with rear O2 spacers or a tune (these are in very limited or not even in production now), new manifold from Mitsubishi to stay road legal and not require a tune, or gut your current manifold and use rear O2 spacers or a tune

Don’t get one of those cheap eBay Chinese manifolds, they don’t have the correct front O2 bungs

One one of these options we can recommend for road legal emissions compliant use, replacing it with a brand new manifold with cats

Last edited by pcfreak4; June 30th, 2020 at 08:23 AM.
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