Is it legal to remove DPF?
#1
Is it legal to remove DPF?
I have a new 6.7L - obviously I'm not removing or retuning anything while under warranty. However, at best the DPF system lowers fuel economy, particularly during regens, and at worst it causes more problems than its worth. Nevertheless, there are lots of videos online showing how to remove and retune with seemingly no side effects. Is it legal?
Our municipal highway department uses Super Dutys, and they are running the newer gen now with the 6.7L. (Previously the 6.0L gen). I wondered, given those trucks are often idling for hours on end, how they were dealing with what must be frequent regens. Yesterday I noticed the tailpipes of one of their "new" 6.7L F-550s were completely black. My understanding is that only removing the DPF would cause the black, sooty pipe. Any thoughts?
Our municipal highway department uses Super Dutys, and they are running the newer gen now with the 6.7L. (Previously the 6.0L gen). I wondered, given those trucks are often idling for hours on end, how they were dealing with what must be frequent regens. Yesterday I noticed the tailpipes of one of their "new" 6.7L F-550s were completely black. My understanding is that only removing the DPF would cause the black, sooty pipe. Any thoughts?
#2
#3
#4
I hear you. I wonder if the city is somehow allowed to register their fleet as "off highway" as well in the same way fireman can drive a 100,000lb fire truck without a CDL.
Regarding actual off-road driving, I think I would be paranoid of putting a dent or crinkle in the DPF assembly of the pipe. It's one thing when you bend an exhaust or muffler of a gas engine, but man, that would be some expensive damage.
I only have about 450 miles on my new truck. So far, one regen at about 200 miles. The book says no towing until 500 miles, but last night I had to tow an 8500lb tractor up a mountain road for about 10 miles uphill. I'm hoping some passive regen occurred during that trip, oil temp was hitting 220 despite ambient temp of only 45F.
Regarding actual off-road driving, I think I would be paranoid of putting a dent or crinkle in the DPF assembly of the pipe. It's one thing when you bend an exhaust or muffler of a gas engine, but man, that would be some expensive damage.
I only have about 450 miles on my new truck. So far, one regen at about 200 miles. The book says no towing until 500 miles, but last night I had to tow an 8500lb tractor up a mountain road for about 10 miles uphill. I'm hoping some passive regen occurred during that trip, oil temp was hitting 220 despite ambient temp of only 45F.
#5
#6
Good point; probably depends upon exact location of rock you're driving over. Usually the damage my previous Super Duty suffered from off-road was dented rear shock tubes...I hate how low those hang. Aside from its size on tight trails, the Super Duty is pretty competent off road. I have a few places I have to access with the truck which are well off the beaten path; I guess I'll still be paranoid of damaging the DPF assembly. I think the FX4 package should offer a DPF skidplate, given that a new DPF probably exceeds the cost of a new transfer case.
#7
It is illegal to remove or tamper with emission equipment. If you live in an area that checks this stuff. It better be in place. If you remove it, You may want to save it, so you can replace it when you want to sell the truck. Different parts of the country pay more or less attentions to this. So your local will be a big part of if you want to play with it.
Heck even Off-Road construction equipment is now Tier 4 compatible having DEF on Skid Loaders and back hoes. So saying Off-Road doesn't make it legal.
And yes with enough mileage and use, Even our new tail pipes turn kinda black. They don't get the cacked on soot like the 6.0L and earlier trucks. But they do loose their shiny steel appearance.
Heck even Off-Road construction equipment is now Tier 4 compatible having DEF on Skid Loaders and back hoes. So saying Off-Road doesn't make it legal.
And yes with enough mileage and use, Even our new tail pipes turn kinda black. They don't get the cacked on soot like the 6.0L and earlier trucks. But they do loose their shiny steel appearance.
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#8
Nobody would buy a truck that would sustain serious damage if left running too long. These systems just aren't that sensitive.
#12
Most paid departments require at least a class B, many require class A CDLs.
Having been involved in two wrecks (in the past 3 years... grumble... both were not-at-fault, thankyouverymuch) involving fire apparatus >26K GVWR, DPS and our insurance company were very clear about confirming that I had the proper class of license.
#13
Absolutely incorrect. I hold a class B (non-CDL) as I drive fire apparatus but am a volunteer and do not leave the state - since it's not vocational, there's no requirement to have a CDL.
Most paid departments require at least a class B, many require class A CDLs.
Having been involved in two wrecks (in the past 3 years... grumble... both were not-at-fault, thankyouverymuch) involving fire apparatus >26K GVWR, DPS and our insurance company were very clear about confirming that I had the proper class of license.
Most paid departments require at least a class B, many require class A CDLs.
Having been involved in two wrecks (in the past 3 years... grumble... both were not-at-fault, thankyouverymuch) involving fire apparatus >26K GVWR, DPS and our insurance company were very clear about confirming that I had the proper class of license.
#14
The problem with blanket statements like that is that they deal with state law. Each state has different laws, and there is an exemption in federal law. So that may be true in your state, but not necessarily in the OP's.
Originally Posted by FMCSR
From the Federal Motor Carrier Safety Regulations:
Subpart A - General
382.103 Applicability
(d) Exceptions
(3)(ii) Firefighters or other persons who operate motor vehicles which are necessary for the preservation of life or property or the execution of emergency governmental functions, are equipped with audible and visual signals, and are not subject to normal traffic regulation.
Subpart A - General
382.103 Applicability
(d) Exceptions
(3)(ii) Firefighters or other persons who operate motor vehicles which are necessary for the preservation of life or property or the execution of emergency governmental functions, are equipped with audible and visual signals, and are not subject to normal traffic regulation.
#15
it is illegal. Question is do you live in an inspection state? if you don't you will probably get away with it. Only problem is the DPFs have been mandatory going on 7-8 years from now. Only a matter of time till cops start catching on that diesels do not smoke anymore and start pulling people over.
I thought about a delete(I live in an inspections state) had some buddies do it, and read online. And the common theme was it improved MPG and got lots of powers, but the yeah but or fine print in under their breath was issues with the dealers, this little part breaking here and there.
Do what you want.
I thought about a delete(I live in an inspections state) had some buddies do it, and read online. And the common theme was it improved MPG and got lots of powers, but the yeah but or fine print in under their breath was issues with the dealers, this little part breaking here and there.
Do what you want.