I think maybe it's because Diesel users have always been some sort of red-headed stepchildren. For many years, the majority of Diesel users were trucks and heavy equipment - stuff that nobody really cared about, plus it's not like somebody was trying to "hot-rod" their front-end loader. Bolting a "T" on an 8V92 was about it. The few cars that used diesel, were of no significance to anybody but the owners of said cars, and they typically didn't buy a diesel for its 0-60 time
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