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Old 03-24-20, 09:35 PM
big john
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Originally Posted by LAJ View Post
It's a division of the Colorado Department of Health and Environment. I diagnose vehicles that shops and consumers are having issues with passing the emission test. We still run an IM240 loaded mode dyno test, and it's as close to real as it can get.

The diesel side is a whole different ballgame, but there is a pretty cool old dyne that can handle a tandem wheel coalburner, and it's pretty interesting to watch a tandem dump or tractor spool that thing up. Less the noise, and the smell, and all the rest that's associated with those pigs.
I retired from a Chevy dealer last year. I did IM 240 testing on around 6000 cars until California switched to static IM testing on everything 2000 and newer.
We never put a diesel on the dyno.
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