JeffSyh
Registered
It's allowed here in sask almost all farmers delete their trucks but if you want to haul any good to California, you need a certified clean idle truck. So if you delete your semi and plan on going to California for loads you will be ticketed and pretty much ban from California. We are also always required to keep record of deleted trucks during safety so the goverment does know who and what trucks are deleted and they could pass a law at any moment saying if you deleted your truck you have to reinstall aftertreatment or no more driving.I know a very popular mod with diesel is the DFE delete...lots of people I know with diesel pick up trucks have done that...
I'd guess it wouldn't be allowed with commercial vehicles as they are inspected.
There was a lot of talk about passenger vehicles going to be under close scrutiny when it comes to modifications such as lifts, exhaust, intakes and such but that has never come to fruition as far as I see.
The medium/light duty aftermarket has been sued multiple times already this year and last from the epa due to tunes and deletes. EPA also stopped the "off-road use only" loop hole so even if you or the aftermarket company buy or sell deletes for off road use either party can be sued or ticketed. Aftermarket performance parts will be a thing of the past one day.