It sounds like you got regulatory testing done. Again, regulatory testing of diesel emissions are highly lacking, and emissions testing tends to focus more on s

It sounds like you got regulatory testing done. Again, regulatory testing of diesel emissions are highly lacking, and emissions testing tends to focus more on specific toxins and greenhouse gases. So, sure, maybe you passed regulatory emissions testing, but it doesn't mean you didn't create a monster. Connect a modified diesel to a Texas emissions testing system and it'll likely pass while it's spewing soot and other garbage.