6.7 emissions delete
Posting Guru
Joined: Jan 2011
Posts: 1,352
Likes: 4
States are responsible for enforcing federal laws, and can do so as the state sees fit and is able to. So, it depends state to state how inspections are conducted. A state can't make their own law that contradicts a federal law, but they can make laws and regulations about how that state will enforce laws. (i.e. a state can say that it will not inspect emissions, but it cannot say that it is legal to modify factory emissions)
I see state police in NH pulling trucks over all the time (semis, dump trucks.. basically anything DOT related. I assume that they could pull over your average Joe if he was straight piped and write him a fine.
Laughing Gas
Joined: Dec 2005
Posts: 906
Likes: 107
From: Seattle area
Well, a county or city ordnance can also be written, as long as it doesn't counter a higher-echelon law (like state or federal). Here in WA, some counties check emissions, some don't, some are more restrictive than others. I'm sure a local cop could get you on it if they really wanted. Might have to call in for higher level support, but if they pull you over for cause (speeding, blinker out, etc) and determine your vehicle is not safe to drive (visual inspection of outside of vehicle for roadworthiness shows the exhaust system may not be safe in the opinion of the officer (yes, BS), you get a ride and the truck gets a tow. Very very (very) unlikely, but not impossible. I am neither a cop nor a lawyer, don't take anything I say as gospel, and different states and jurisdictions have different laws.. I ran my 6.0 350 straight piped for 14 years and was never harassed about it (other than the jet engine noise)
1st Gear
Joined: Sep 2024
Posts: 1
Likes: 0
6.7 delete
I'm in the same boat being in MA. You have to reinstall each year for your annual inspection as they do both a visual check and system readiness check through OBD2. So, the easiest was is to leave the EGR in place and use the tune to hold it shut. Then just remove the DPF and reinstall a few weeks before inspection. You can't do it the day before as it has to have a regen event stored before it will pass. I'm not sure I want the hassle once a year so I haven't jumped yet... despite my deleted buddies telling me daily how much I'm missing and how easy it is to R&R the DPF once a year.
I have everything stock but a dpf delete and a tune to go with it, if I put the dpf back on will I need to change the tune, or can I just put the dpf on, get a sticker, and take it off? Also In mass
Prolocutor
Joined: Jan 2009
Posts: 13,618
Likes: 1,247
From: Western MA
You would not only need to reinstall the DPF but also go through a few regens (potentially over 1k miles) before the PCM would allow the MA inspection system to allow it to pass.
Prolocutor
Joined: Jan 2009
Posts: 13,618
Likes: 1,247
From: Western MA
Since I was the one quoted, yes, I'm fairly sure I know the thread's age. I was just trying to help a new member. 👍🏻
More Turbo
Joined: Jun 2021
Posts: 710
Likes: 356
From: Beautiful South
I'll second! It is absolutely federal law!
States are responsible for enforcing federal laws, and can do so as the state sees fit and is able to. So, it depends state to state how inspections are conducted. A state can't make their own law that contradicts a federal law, but they can make laws and regulations about how that state will enforce laws. (i.e. a state can say that it will not inspect emissions, but it cannot say that it is legal to modify factory emissions)
States are responsible for enforcing federal laws, and can do so as the state sees fit and is able to. So, it depends state to state how inspections are conducted. A state can't make their own law that contradicts a federal law, but they can make laws and regulations about how that state will enforce laws. (i.e. a state can say that it will not inspect emissions, but it cannot say that it is legal to modify factory emissions)
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Logistics Pro
Joined: May 2011
Posts: 4,832
Likes: 668
From: Maine
You can get away with it for non-DOT personal vehicles as long as you stay away from Stealerships, as far as inspections go anywhere outside CUmberland County doesn't do emissions. However, if they check, it's a fail. Many places won't notice if you don't say anything, but you're the one rolling the dice.
Super Moderator
Joined: Dec 2011
Posts: 13,340
Likes: 6,123
Effective October 1, 2024, for diesel engines in trucks over 14K GVWR (F-450 Cab Chassis and heavier), emissions checks are required twice per year.
Effective January 1, 2027, emissions checks are required FOUR (4) times per year, every 90 days, for the vehicles described in the sentence above.
So whatever state your are in... it could always be worse.
Effective January 1, 2027, emissions checks are required FOUR (4) times per year, every 90 days, for the vehicles described in the sentence above.
So whatever state your are in... it could always be worse.
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myoldf250
1987 - 1996 F150 & Larger F-Series Trucks
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Jul 24, 2013 10:04 AM