TwinTurbo.NET: Nissan 300ZX forum - Actually, one of the big emission problems that direct
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Subject Actually, one of the big emission problems that direct
     
Posted by MixManMash on September 15, 2020 at 10:44 PM
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In Reply To Yes I agree, DIG causes more issues than problems it solves posted by Stanky (BC) on September 15, 2020 at 10:14 PM
     
Message injection creates is particulates. This is why many manufacturers have added port injection to help control particulate emissions. I believe Toyota was first, but these days VW and Ford have also been using similar strategies. Some manufacturers are actually going the route of particulate filters that need to be regenerated every so often, akin to DPF on diesels.

     
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