EPA Cracking down on Diesel Tuners?

[Best4x4xFAR]

Seems to be a lot of stories similar to this one popping up, with numerous big name shops shutting down, or not longer offering tuning solutions

https://www.dieselworldmag.com/insid...oming-for-you/

https://www.thetruckersreport.com/tr...rucks.1561667/

https://www.epa.gov/enforcement/perf...ormation-sheet

[bfeng]

Sorry guys but I am all for emissions enforcement on all modern cars, gas or diesel.
In my opinion, polluting less isn’t a bad thing, nor is reducing fuel consumption to reduce both greenhouse gases and reliance on imported oil.. We are in a golden age of performance with out the traditional downsides of poor fuel efficiency and pollution. Why spoil it by being a cheap SOB? There are plenty of gas powered German SUV’s that tow well, have good performance, and which can be tuned for even higher performance without disabling their emissions systems. . . if you can’t afford the upkeep on a diesel X5, then you should buy a gasoline version. Just a personal opinion...

[Best4x4xFAR]

Originally Posted by bfeng

Sorry guys but I am all for emissions enforcement on all modern cars, gas or diesel.
In my opinion, polluting less isn’t a bad thing, nor is reducing fuel consumption to reduce both greenhouse gases and reliance on imported oil.. We are in a golden age of performance with out the traditional downsides of poor fuel efficiency and pollution. Why spoil it by being a cheap SOB? There are plenty of gas powered German SUV’s that tow well, have good performance, and which can be tuned for even higher performance without disabling their emissions systems. . . if you can’t afford the upkeep on a diesel X5, then you should buy a gasoline version. Just a personal opinion...

I love that there is always an assumption that someone can't afford to own one. For the record, I have not deleted or tuned my X5, and I don't support full deletes as it does make the vehicle a bigger polluter. That being said, I'm not necessarily against EGR deletes, as it is largely inactive at driving speeds, and can be a major contributor to serious negative carbon buildup issues. Nor am I against mild tunes that still use the SCR and DPF systems to keep tailpipe emissions clean, while making some additional power.

That being said, its no secret that today's Diesel emissions controls have LOWERED the efficiency of Diesels, the benefit obviously being cleaner tailpipe emissions. I don't think Diesel emissions controls are at the place of gas emissions controls however, where they really have gotten to a point where you don't have to sacrifice power or fuel efficiency, nor is there near the problem with extremely expensive, out of warranty repair issues with gasoline engine emissions control systems.

Whether someone CAN afford to replace high dollar DPFs and SCR systems or not, it is not reasonable to have to expect to take on these expenses at such early intervals (often times under 100K miles). Thankfully some warranties have been extended, but its still sad if you think about it that you can expect these systems to fail again (now out of extended warranty, but well within reasonable expected service life for the rest of the vehicle).

Then there is the hassel involved with having to take on these repairs because the systems have not been engineered and produced to have an acceptable level of reliability.

This has effectively driven many owners to deletes not only as a more cost effective alternative, but also to relieve themselves from the constant headaches of the unreliable systems. When you consider the economy and power gains that can be had versus continuing to replace high dollar emissions parts, it becomes even more enticing.

As for your suggestion to just buy gas? I'm sure we could all be happy with the gas version, it's no slouch. But even with the lost efficiencies of modern emissions control systems, the Diesels still hood a significant edge in fuel efficiency, and torque output.

Anyone want to bet all those 'Rolling Coal' idiots have brought these modifications to the attention of the feds more than anything else?

[bfeng]

(1) what is the major reason people deleted any part of the diesel emission system? Most, but maybe not all, whine about cost.a small fraction do it for performance and some do it because they like to customize. For the second group, fine, but the it becomes a race vehicle which shouldn’t be allowed registration and a plate. I run VP 110 leader in my race cars and they aren’t regular drivers. For the third group, deleting is just selfish behavior.

(2) assumption, yes I assumed most delete out of frustration due to the continued expense of maintaining the emissions system function per original design and state/federal emissions laws.

(3) if you monitor EGR as you drive you’ll see it’s actually fairly active.

(4) I completely believe emissions controls lower the efficient and performance of all types of internal combustion engines. No argument from me here. It’s the societal price we pay to have millions of cars on the road burning billions of gallons of fuel each year.

(5) of you want to drive a vehicle longer than the life of its emissions system components, which is a completely discretionary choice, then I think you should pony up and fix the stuff. I have to keep my dog’s vaccinations up to date no matter how old she is, so why is it you don’t have to keep up your emissions control system in your car? Now, in the USA (excl a few states like Calif), if you Car is old enough you don’t have to retain any emissions gear. I’m ok with that as I applies to collector vehicles that aren’t used more than a few thousand miles a year. In particular, emissions controls from the 1970’s worked poorly and really cause operating and longevity problems. CAT’s, however were a good invention and I applaud hot toddlers who put high flow cars on their street machines.

(6) no argument from me on the pro’s of diesel over gas. I picked an X5 d over the 5 liter gas model for the economy and torque. Had i a chance to do it over maybe I would have gotten the V8 as the lower repair costs may have offset the higher fuel consumption.

I guess my point is we all live in a society/earth where we have an obligation to not trash the place for everyone else. However, There will always be those who disagree and feel the entire plant is theirs and theirs alone for the trashing. I have acquaintances like that. These are the guys that dump their used automotive fluids and solvents out back, and toss cigarette butts on the ground because “they are trash,” or “it’s a free country,” or “why should I dirty up my ash tray?” And for these wonderful people, we have laws and enforcement of those laws is ok by me.