Thanks Tobes, good point.
Would 100 cell cats be more resistant to unburnt fuel during start up? I presume this fuel will get burnt eventually and 100 cell cats have less resistance to gas flow possibly allowing more of the unburnt fuel to flow past them into the rear of the exhaust?
Although I guess if I'm already going to someone to get the DTC mapped out may as well change the start-up fuelling map.
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