GL Class (X164) 2007-2012: GL320CDI, GL420CDI, GL450, GL550

2012 GL 350- Tunezilla Emissions delete done- what hardware changes do I need

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old Nov 15, 2024 | 07:42 AM
  #1  
bigbuilder's Avatar
Thread Starter
Newbie
 
Joined: Oct 2023
Posts: 11
Likes: 0
2012 Gl350
2012 GL 350- Tunezilla Emissions delete done- what hardware changes do I need

Hi Everyone,

Well my 2012 gl 350 is at least off the countdown now.

No check engine lights for the moment.( fingers crossed)

Can someone please help me with what to do next? I did the TZ program and finally got it to work. I unplugged the SCR module in the trunk per their instruction. ( I dont know what that does exactly)

I know I need to remove the DPF or hollow it out. Do I need to do anything else with sensors in exhaust?

Can anyone give me detailed info on what I have to do now?

Any other info to help make this a nice reliable vehicle would be greatly appreciated.

Reply
Old Nov 15, 2024 | 08:21 AM
  #2  
BlownV8's Avatar
MBWorld Fanatic!
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Aug 2003
Posts: 8,882
Likes: 1,214
From: In my garage
E55, GLS450, GL63, GLE350
Stay right there. The EPA will be sending someone out to help you soon. Just kidding but man have they started to crack down on the diesel tuning companies for selling emission defeat/performance tuning options. Seen some million plus dollar fines on the diesel tuner businesses. Good luck, maybe someone with some knowledge on the topic will chime in.
Reply
Old Nov 15, 2024 | 08:28 AM
  #3  
bigbuilder's Avatar
Thread Starter
Newbie
 
Joined: Oct 2023
Posts: 11
Likes: 0
2012 Gl350
Hi, Thanks for the reply.

There is no EPA where I live. Different country. I understand this is for off road use only. But the car cant be driven, sold or traded with the countdown on ( for the 3rd time since we owned it)

Possibly people could just suggest what should be done hypothetically,



Reply

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 


You have already rated this thread Rating: Thread Rating: 0 votes,  average.


All times are GMT -4. The time now is 11:52 PM.

story-0
New Electric Mercedes-AMG GT 4-Door Coupe Unveiled: 10 Things You Need to Know

Slideshow: Mercedes-AMG's new electric GT 4-Door Coupe trades combustion for software, synthetic noise, and more than 1,100 horsepower.

By Verdad Gallardo | 2026-05-20 20:08:15


VIEW MORE
story-1
6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)

Slideshow: Not every Mercedes design becomes timeless, some feel stuck in the era they came from.

By Verdad Gallardo | 2026-05-12 18:09:07


VIEW MORE
story-2
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun

Slideshow: Yes, Mercedes built manual cars, and some of them are far more interesting than you'd expect.

By Verdad Gallardo | 2026-05-02 12:36:58


VIEW MORE
story-3
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

Slideshow: A one-of-one U.S.-spec Mercedes-Benz SLR McLaren Roadster became even rarer after a factory-backed transformation at McLaren's headquarters.

By Verdad Gallardo | 2026-04-29 11:19:28


VIEW MORE
story-4
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

Slideshow: Before curves took over, Mercedes mastered the art of the straight line, and some of those shapes still look right today.

By Verdad Gallardo | 2026-04-25 12:05:49


VIEW MORE
story-5
Flawlessly Restored Mercedes 190E Evo II Heads to Auction

Slideshow: The 190E Evolution II shows how a homologation necessity became a six-figure collector icon.

By Verdad Gallardo | 2026-04-22 17:53:47


VIEW MORE
story-6
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know

Slideshow: Mercedes is turning one of its core nameplates electric, and the details show just how serious this shift is.

By Verdad Gallardo | 2026-04-21 13:58:06


VIEW MORE
story-7
Mercedes EQS Gets A Major Update: Everything You Need to Know

Slideshow: Faster charging, longer range, and a controversial steer-by-wire system define the latest evolution of Mercedes-Benz EQS.

By Verdad Gallardo | 2026-04-15 10:35:34


VIEW MORE
story-8
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve

Slideshow: These overlooked Mercedes-Benz models never got the spotlight, but they quietly delivered more than most remember.

By Verdad Gallardo | 2026-04-13 19:35:45


VIEW MORE
story-9
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping

Slideshow: A well-used 1991 Mercedes-Benz 300D with more than one million miles is now looking for a new owner, and it still appears ready for more.

By Verdad Gallardo | 2026-04-10 10:05:15


VIEW MORE