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Started By
Message
re: EPA Set to remove DEF engine derate...
Posted on 8/12/25 at 3:57 pm to Purple Spoon
Posted on 8/12/25 at 3:57 pm to Purple Spoon
quote:
DEF does clean up exhaust but at the expense of efficiency, equipment durability, ancillary waste from production, distribution and usage of the product.
DEF is just urea squirted into the exhaust stream over a catalyst. Out of all the BS on a modern diesel intended to control emissions, it's the least pain in the arse thing. Let's talk about EGR, DPF's, 32ksi fuel systems, variable geometry turbochargers, intake throttle valves, exhaust throttle valves.........
0
Posted on 8/12/25 at 4:00 pm to BoostAddict
quote:
How would a cop know if you can't tell by looking at it.
Wipe your finger inside the tailpipe.
I'm not having the whole deleting is good vs bad discussion on here again. I know the "don't delete your diesel" position is extremely unpopular in the south. Personally, I would never do it without some legislation protecting me.
Posted on 8/12/25 at 4:04 pm to DownshiftAndFloorIt
quote:thx
DownshiftAndFloorIt
It’s pretty easy to spot, black-sooted pipes on a new truck.
This post was edited on 8/12/25 at 4:06 pm
Posted on 8/12/25 at 4:08 pm to White Bear
It can be hidden pretty well. There are ways to gut the canisters so externally everything appears in place, and the engine can be tuned so that smoke is very minimal and only in hard accelerations.
One thing you can count on is the better enforcement gets, the better people get at hiding stuff.
BUT, universally, there will be black residue inside the pipe of a fully deleted diesel vehicle and a fully in-tact one will not have it.
One thing you can count on is the better enforcement gets, the better people get at hiding stuff.
BUT, universally, there will be black residue inside the pipe of a fully deleted diesel vehicle and a fully in-tact one will not have it.
Posted on 8/12/25 at 4:52 pm to Clames
quote:
My F150 has been catalytic converter and EGR free since 2005.
As a dude who deletes most things, no cat is just dumb.
No egr, sure.
No double or triple cats, sure.
No cat at all? Doesn't make a single bit of sense in a fuel injected vehicle under 1000 hp.
A single large cat post collector works great and has zero real effect on power/mpg while cleaning up the exhaust.
Posted on 8/12/25 at 4:59 pm to BoostAddict
Since we have a lot of diesel drivers, what’s the best diesel truck before DPF and DEF? Powertrain wise.
This post was edited on 8/12/25 at 5:00 pm
Posted on 8/12/25 at 5:20 pm to UptownJoeBrown
7.3 Ford. Dodge had a good engine then, but it was, you know, in a Dodge.
6.7 Ford is the best now, and has been since 2012.
6.7 Ford is the best now, and has been since 2012.
Posted on 8/12/25 at 5:23 pm to DownshiftAndFloorIt
I knew a baw that plumbed up a truck to run off-road diesel and you had to really investigate to find it.
He just wanted to do it.
He just wanted to do it.
Posted on 8/12/25 at 5:26 pm to Turnblad85
quote:
If so, that makes the extra expense and trouble more digestible. I like clean air. I like for my kids to breath clean air.
Simpleton low information voter. People like you should stay at home during election season
Posted on 8/12/25 at 5:26 pm to DownshiftAndFloorIt
quote:
China and India have no such regulations and can pollute enough to more than offset the improvements the US and Europe have made in the past 30 years.
I agree on the global pollutant level but they also have the shite local air quality to show for it. I’d rather not have to deal with that here. Clean air is a nice thing.
Posted on 8/12/25 at 5:29 pm to billjamin
quote:
agree on the global pollutant level but they also have the shite local air quality to show for it. I’d rather not have to deal with that here. Clean air is a nice thing.
I’d grant an exception for cammed big block muscle cars something about the exhaust is sexy.
This post was edited on 8/12/25 at 5:31 pm
Posted on 8/12/25 at 5:32 pm to BoostAddict
I currently have a Farmall 120A with a burned up DEF pump
Hauling it to get deleted next week. frick all of that shite
I can understand having it on a semi truck. But for tractors it’s bullshite, there’s not enough tractors running every day to make any significant environmental issues. We need raw, reliable horsepower
I want Farmall to go back to engines like this
LINK
Hauling it to get deleted next week. frick all of that shite
I can understand having it on a semi truck. But for tractors it’s bullshite, there’s not enough tractors running every day to make any significant environmental issues. We need raw, reliable horsepower
I want Farmall to go back to engines like this
LINK
Posted on 8/12/25 at 5:37 pm to bad93ex
quote:
I’d grant an exception for cammed big block muscle cars something about the exhaust is sexy.
All day.
Posted on 8/12/25 at 5:38 pm to X123F45
quote:
A single large cat post collector works great and has zero real effect on power/mpg while cleaning up the exhaust.
Well stock this truck had two light-off catalytic converters and two primaries. I put longtube off-road headers on after the supercharger, no reason to put them back of when the tune eliminated the need for them. Just dead weight and a potential failure point.
Posted on 8/12/25 at 5:40 pm to deltaland
My personal favorite one is back when I was working offshore we started mothbaling all our old 71 series Detroit fluid pumps and power packs because all the operators wanted emissions compliant units. So we started by tier 3 or 4 units. Then after the BP coast guard report came out they all wanted class1div2 units and no one made them. So we pulled all the old mechanical and air starter unit out and recommissioned them.
This post was edited on 8/12/25 at 5:42 pm
Posted on 8/12/25 at 5:47 pm to billjamin
Diesel not burned is diesel not polluting, scrap all the DEF/DPF bs!
Posted on 8/12/25 at 6:43 pm to TroyTider
quote:
The same group that pushed for DEF didn’t account for how much cardboard and plastic is now in landfills.
Do they ever?
Climate change never helped the environment.
Posted on 8/13/25 at 1:44 am to DownshiftAndFloorIt
quote:Show me the overall environmental benefit of producing all of the components involved in the production and transportation of def along with all of the damaged components resulting from def versus just not having it completely and ill shut up forever about it. Actual scientific data, not made up Reddit b.s.
Nah. It's not a bad thing at all. It's a lot simpler than EGR and much more effective. If you want to knock NOx out of the exhaust stream, aftertreatment is the way to do it.
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