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Message: <blockquote data-quote="amdfaisal" data-source="post: 2797293" data-attributes="member: 4871">my heater still on... sometimes in the morning when set to 27 (my normal setting), warm air will be blown out by the system. quite nice actually since in the morning it is quite cold.catalytic converter kong ah? if you wiki the catcon...catalyst poisoning (jahanamkan canton) occurs when the catalytic converter is exposed to exhaust containing substances that coat the working surfaces, encapsulating the catalyst so that it cannot contact and treat the exhaust. The most notable contaminant is <a href="http://en.wikipedia.org/wiki/Lead" target="_blank">lead</a>, so vehicles equipped with catalytic converters can only be run on unleaded <a href="http://en.wikipedia.org/wiki/Gasoline" target="_blank">gasoline</a>. This is because if a 'leaded' fuel (a fuel with lead content) is burnt there will be a residue of lead which can damage the catalytic converter. Other common catalyst poisons include <a href="http://en.wikipedia.org/wiki/Manganese" target="_blank">manganese</a> primarily from the gasoline additive <a href="http://en.wikipedia.org/wiki/Methylcyclopentadienyl_manganese_tricarbonyl" target="_blank">MMT</a>, and <a href="http://en.wikipedia.org/wiki/Silicon" target="_blank">silicon</a> which can enter the exhaust stream if the engine has a leak allowing <a href="http://en.wikipedia.org/wiki/Antifreeze" target="_blank">coolant</a> into the combustion chamber. <a href="http://en.wikipedia.org/wiki/Phosphorus" target="_blank">Phosphorus</a> is another catalyst contaminant. Although phosphorus is no longer used in gasoline, it (and <a href="http://en.wikipedia.org/wiki/Zinc" target="_blank">zinc</a>, another low-level catalyst contaminant) was until recently widely used in engine oil <a href="http://en.wikipedia.org/wiki/AW_additive" target="_blank">antiwear additives</a> such as <a href="http://en.wikipedia.org/wiki/ZDDP" target="_blank">ZDDP</a>. Beginning in 2006, a rapid phaseout of ZDDP in engine oils was begun.eh i thot u have VAFC... what's ur AFR now? if too much fuel is injected maybe that explains why ur FC is now up by xx%interesting article about stoichiometric<a href="http://en.wikipedia.org/wiki/Stoichiometric" target="_blank">Stoichiometry - Wikipedia, the free encyclopedia</a></blockquote>

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