After the debacle with an injector in the exhaust system recall, VW delays the heavy injection to after tdc leaving extra rich burning fuel exiting the cylinder. Does booger up the EGR with soot, heats up the coolant. Valves? Turbo? I dunno, but the stupid system still regens on long trips about every 50 miles.
There's a silent recall out for TDI's to have the egr system fully replaced after 70k miles on cars that set a check light.
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casual notes from the underground:There are some "experts" out there that in reality don't have a clue as to what they are doing.
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