Quote:
Originally Posted by derklug1
To use EGR only to control NOX means that it has to be open for a broader band of engine range. To get exhaust back pressure high enough to overcome the turbo boost puts a lot of heat into the turbo hot side. I'm guessing that they were burning out turbos and manifolds but didn't want to go to DEF and so they cheated.
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I thought DEF was a US requirement now, or is that just for diesel trucks? I don't see enough diesel cars around here to know.
70% of the time I've talked about DEF people think I'm pulling their leg. lol
Also do those cars even have EGR valves, or are they just like the LFX and most other cars where they just leave the exhaust valves open longer?