Originally Posted by dustman_stx
You can remove it and tune it, but beware that if you attempt to trade or sell that vehicle, the original emissions system must be intact. I know it's a $25,000 fine in Texas to sell a vehicle without the emissions system installed. You might run into issues in places that have emissions testing as well. The way you drive a diesel has a lot to do with how dependable the new ones are from what I understand. Lot's of short drives not reaching full operating temp is very hard on them from what I read. Those guys running VERY high miles like you mention are probably doing lots of long hauls and running the vast majority of the time at full operating temp. Also, I would venture that most people will run the factory filters and not consider them "crappy". If you have to do modifications or run high dollar filters or any other caveat to reach the mileage you speak of, the average consumer will never get there.
Actually on a duramax the filter is crappy for the factory style filter @ $40.00 + a filter.
A much much better filter and conversion kit can be had at around $100.00 and the "better" filter can be had for around $15.00
My "factory" duramax filter type could only withstand about 5000 miles or less of service before being changed or plugged.
The "new" filter will go to 10,000 miles in service life.
Installed the change over kit this last spring and still running the same filter.
I'd have changed the oem type twice by now.
So in short it costs about $100.00 to be able to run a filter half the cost of the oem filter and it lasts twice as long.
The math looks to be way better on the conversion.