Deleting EGR on my Mercedes E420 CDI 

Nice! What a great feeling having all that done. I wonder in what shape my cylinder heads and gaskets are in. Inevitably, the gaskets will need replacing in likely not too long. So cool to hear I inspired you to buy one! 350 hp sure is plenty. Thanks alot for your comment!

Dat is mijn oude 420 cdi denk ik , G946..

@@beratulusoy9344 klopt..ik rij er nog steeds in.. inmiddels alweer ruim 110.000 erbij op gezet. Heerlijke auto en ik geniet er veel van..heb er ontzettend veel grondig onderhoud aan gedaan toen ik m kocht. Omdat mijn plan is m nog lang te rijden. Is inderdaad het kenteken wat je noemt .er staat een filmpje van dat ik met het motor blok bezig ben op mijn RU-vid kanaal..

@@bkorven mate,you have any idea about hybrid turbos on om629?im itching to get this car,10 years ago i had w211 with om648,it was smooth and reliable just needed litle bit more of oomph.

@@povilassiurblys447 Hey! Not alot, I'm afraid. I know of a guy that has swapped turbochargers on his OM629. He's in a facebook-group with me, for owners of OM628 & OM629. You are welcome to join, even if you don't own one (yet, I guess 😁) and you'd just want to ask questions and discuss turbocharger upgrades.

Thank you, my man! Definitely a good idea, go for it 💪

I bet you will one day get the opportunity to get yourself an E400 CDI or E420 CDI!

Hi! Thank you! An acceleration video with acceleration times is definitely something I will look into making.

Thank you! Oh well, a 535D is a super nice diesel anyhow! Nice ;)

Don't know about that.. but thank you!

@@bkorvencan you please make a Autobahn Video? 100-200kmh or 200-260kmh?

@@user-yl2iq9qi8c Some day if/when I get the opportunity to, sure. I don't live in Germany and close to the autobahn, though. You can check this video out for some acceleration clips: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-X_hDDpLyPx8.htmlsi=n9eQJXLyozN32z1p

@thevanillaguy5173 you must be high or something

It have a great sound but in competition to an e55 it’s not that fire

Thanks! Nice, I can imagine these rims would look awesome on W210, so I bet the ones you found looks great. Oh, okay. Sounds like a cool project!

Yeah, this sludgy mess is not very nice! I don't have much experience with EGR before, so I haven't thought much about whether it is normal or not. Nice to hear your perspective. Haha, long live V8s! At least you can prevent this problem from ever coming back again.

Haha, thanks alot!

Like what lol.. It is plenty modern still. In fact best modern, EURO 4 before AdBlue crap etc.

I realized I had missed your comment. Sorry about the late reply. Thanks alot! This car has covered roughly 210 000km. Although there are some things that can affect the rate of build-up, I'm sure yours won't be quite this bad! 🙂 About not doing the EGR delete earlier.. I sure should have. At the time, I didn't have in mind how badly it would affect the intake in the long run. About the extra fueling; the ECU was also programmed to handle the extra fuel with a reasonable amount of extra air. Hard to say if this has had an impact, but the intake becoming like this is inevitable with EGR. I will definitely make more videos in the future. Again, thanks!

Hi! The software, with EGR off, is custom made by a local tuner.

Yeah, I replaced these gaskets: - A 629 098 09 80 - A 027 997 34 48 (x2) - A 029 997 54 48 (x2) - A 016 997 52 45 - A 027 997 16 48 - A 642 188 05 80 - A 629 142 08 80 I can imagine that yours were even dirtier, at that milage. No one is spared from this, unfortunately. You actually do not need the block-off plates at all, I think. You don't need to bother with trying to somehow physically jam the valves, either. The valve position can via software be adjusted manually to be fixed shut, and then with EGR-off there will be no codes.

Thank you! All right, nice! To decide whether it's failing head gasket or EGR cooler can be a bit tricky I guess, since some of the symptoms would be similar. Unfortunately, failing head gaskets is something I've heard alot of with these engines. I can't remember having heard of the EGR cooler leaking internally. Although, leaking EGR could explain the exhaust smoke at idle but not while driving (valve opening being proportional to load, fully open at idle and thus a higher amount of coolant in the exhaust). However a leaking head gasket could probably do the same. If I have to guess - head gasket, I'm afraid. However, if it's the head gasket there is a high possibility of the engine oil and coolant mixing, so check the oil for sludge (under oil filler cap, for example).

​@bkorven Thanks for the advice, it was the head gasket cracked, the right one. There were signs of an old repair and they have changed only the right one with some crappie brand. I have changed both and serviced the engine. I am so happy with it. The dpfs are deleted and it has a remap. Very quick for a 2.5ton truck 😅 I have one issue though it smokes a bit when its pressed hard and even more if it was staying at idle for some time. I am guessing the Egr valves are getting stuck..

O my God i have the same with my GL420 CDI 2007. OM629 Changed the waterpump thermostat is still blowing from the coolant box..Help me did you solve the problem???

Haha, okay then!.. I used the same oil cooler. All gaskets were replaced! Thank you! 😍

Thank you! Yes, you need to modify the ECU-software.

Yes, I received the fault code P0401, related to insufficient EGR flow. So the car notices! The other side, as in the single pipe with the expanded end? That goes into the intake pipe before the manifold? That is the cooler for the exhaust gases from the EGR. Does not need to be blocked, since no exhaust gases enters from the other side. Or were you referring to something else? Nice to see a fellow 420 CDI-owner commenting!

Yes, I have Airmatic. I like it alot, it's versatile in the way it can be both comfy and stiff/sporty. If problems arise though, it can be a costy repair. The Airmatic is durable, though! This car has had one of the cushions lose air pressure once, since it was new. It was pricy!

Hi! Thank you! I might give it a stage 3 upgrade someday, but it's not something I have more closely planned. It's been doing super well with stage 2 for the past 10 years, but since EGR-delete I've begun to experience problems with turbo boost turning off completely. I believe some of the soot and muck from the intake valves found its way to the turbos, and are making the variable vanes in the turbo stick. This could result in too slow responses in turbo pressure, and then safe mode with no boost at all. So that's something I'm looking into right now, we'll see what it turns out to be. Back in the days I raced an E60 535D with exhaust and tune. It was quicker than my e420 cdi at the time (which only had a piggyback chiptune).

Oh no hope u get it done soon an we get some updates! Im planing to buy also an w211 but cant decide wether to be e500 (m113) or the 420cdi bc off sound that goes for the 500 and torque for the 420! So you think now with stage 2 you would smoke that 535 haha?

@@dc_dante2736 Thanks! I'll get it done, I just don't know when I'll get the opportunity and time to do so, haha. Oh I see! M113 is nice too, ofcourse. "Smoke" would probably be a slight exaggeration, but I think I'd have a good chance, haha!

Hope we get to see some updates in the future!:) How is it lookin with the 0-100 and 100-200 stats?

@@dc_dante2736 There will be updates 👌😁 I think 0-100kph is about 5.4s. 100-200kph should take about 13s!

Tjena! Ursäkta sent svar. Nej, besiktningen märker inte på avgasvärdena att DPF är borttaget. Vet flertalet 420 CDI utan DPF som upprepat går igenom besiktning. Sedan bara något år tillbaka har man börjat mäta s.k. "k-värde" kopplat till sot och partiklar i avgaserna, som du kan avläsa i rapporten för din besiktning. Men det är inget problem. Vanliga fel med den här motorn, som jag känner till, är: - Ovanligt mycket problem med att EGR-systemet sotar/kletar igen insuget. - Motorfästen slits ut fort - Styrmodulen för glödstift har tendens att ge upp 400 CDI (OM628) har helt andra problem, som inte ska förknippas med 420 CDI (OM629).

Nice. From my experience, these engines are very reliable. This car has never had any major issues over the past 14 years. Known issues with this engine that I know of are: - Engine mounts wearing out quicker than normal (not really an issue) - Glow plug control module failing (have had the problem myself) - EGR-system polluting the intake (not unique to this engine though) - Oil cooler leaking (have not had this problem myself) And about the transmission; yes, it seems to be able to withstand the torque. It's been driven with this stage of tuning for about 10 years now, and the transmission is holding up flawlessly. It seems to be quite overdimensioned from factory, and I don't know why.

Hi! I summarized in my reply to your comment in the other video.

Hi. I used degreaser, but it also took some elbow grease to get rid of it all. Spray degreaser, let it sit a short while, brush, rinse, repeat until satisfactory result.

Sure, we can discuss via Facebook/Messenger if you'd like.

Aftermarket, yes. It was bought on Ebay many years ago, and unfortunately I don't know the manufacturer. It is the US-spec bumper, made of fiberglass composite.

Thanks! I'm getting P0401, related to insufficient EGR flow. As expected, ofcourse! It's getting completely new software including EGR off next week.

I use oil with viscosity index 5w-30. Any of 0w-30, 5w-30, 0w-40, 5w-40 could work fine, and you probably do not need to worry too much about it. There are some benefits and drawbacks with each viscosity index. If you've got both DPF delete and EGR delete I'd recommed using quality ACEA A3/B4 (ACEA C3 for a stock one). Any brand is OK, and you may as well buy the cheapest you can find. Rather be careful not neglecting oil change intervals.

Hey man! That's so nice to hear! I have a facebook group named "MB 400/420 CDI" for owners, where we help out each other with all kinds of stuff. Apply there if you want, and leave some comment in the application so I know it's you. I'll add you from there. You can ask out in the group amongst all the owners if you want, or you and I can keep talking privately too, ofcourse.

i love the fact that u r still active on this channel after a long time, i will definitely come to facebook group thanks !!!

La conso,l’assurance surtout 31cv fisceau et l’entretient

@@gtxcar6208 je possède une e320 cdi, l’entretien n’est pas un problème, mais la carte grise vas faire mal hahahaha

Also been a sub since your burnout video , it's what made me find about these engines you should definitely do more videos!

I've never heard any owner of OM629 mentioning leaking oil cooler (I'm in contact with several). I've not had the problem myself either, altough I replaced the gaskets now while I was at it. Also, the OM629 and OM642 do not have the same oil cooler. They just use the same gaskets. So no, I don't think OM629 suffers from that same problem. OM629 has some well-known issues, but my impression over the years, from several owners, is that they are very reliable overall.

@@bkorven Hi could you elaborate on the known issues, EGR is one of them but i don't know the others...

@@Anselmo_Simoes EGR, Glow plug relay and engine mounts wearing out quickly is what I can think of.

OM629 owner here: mine had the leaking oil cooler problem but the previous owner fixed it already. Online in the forums, you can find some more owners with that problem too but not as near as often as on OM642 engines - could be due to lower quantities of OM629 of course.

Hello friend! I actually have the exact same problem, with the boost control not working properly. I believe you and me both have problem with sticky soot and deposits on the turbine side of the turbocharger(s). I don't know if the engine needs to be removed or not... I will find out this winter, and then I can help you 😉 Maybe I could make a video of it.

@@bkorven Hello Friend. Thanks a lot for the answer and if you make a video I think it will help more people and W211 lovers with this attractive engine.

Thank you! If you wish to achieve an interesting exhaust note, I'd advice on deleting the cat as well. Also, make sure not to just hollow out any exhaust component, as it will have a bad impact on flow and sound compared to actual straight piping. The impact on exhaust note by EGR delete is in my experience small (or negligible, even). Also, keep in mind that my car has a V8 while yours has an I6. An '04 320 CDI can sound fantastic nonetheless, but just different from what a 420 CDI sounds like. If you run straight pipe exhaust all the way from the turbo, I'm pretty sure you'd be happy with the exhaust sound!

@@bkorven ......Excellent.... I will try that. Thank you!!........😀

@@martinduffy386 Forgot to mention that you might need to have the ECU-software reprogrammed for no cat (I'm not entirely sure it's needed, but just so you have that in mind in advance!) Good luck! 🙂

@@bkorven Right.....I would never of thought of that. Thanks........👍

Hi. EGR off physically, with block off plates.

Hello, I have not encountered this problem myself, and haven't heard about it being a common problem I'm afraid. However I don't suspect troubleshooting it should be any different from in general, for any other car. The first thing that comes to mind is the thermostat, but perhaps you have some history on the car that might indicate the root cause. Perhaps you can read some error code, which could help. I have a facebook-group for owners of these engines, where you can try asking the question to all members if you'd like. You are welcome to join!

It’s probably the thermostat

Hi! I am pretty sure you can turn off EGR via ECU-software on an S400 CDI too, yes.

DPF is removed since long ago.

I should add this to the description. Thanks.

Hello! I'm sorry, but I don't fully understand spanish.

I will for sure. Thank you!

A simple way of gaining a boost in power is to straight pipe the exhaust system. DPF delete will make the biggest difference, and with optimized ECU-software you should be able to make 400hp.

Ok i will see that thank you brother , actually i have the intercooler oil problem..😓

@@mb056 Oh, that is unfortunate.. It is only the small circular gaskets underneath the oil cooler that usually needs replacement, right? They are not that hard to reach! I never had this problem myself, but I have renewed the seals as preventative measure.

I've seen people claim they've noticed a difference in sound after EGR-delete, but I haven't been able to tell any difference. It could have a slight impact on the exhaust note.

I was not aware, haha. Thank you!

​@@bkorven I'm not joking ! If I didn't know already, I wouldn't believe it's not and AMG V8. Thanks to your inspiration I just removed the silencers from my C350 CDI OM642 today! It now has a rumble to it; but you're is on another league.

@@abdbach379 Ah, cool! I love the sound of that V6. Muffler delete is where I also started off at. While it made a slight improvement in sound, I wanted more 😁. Thanks again!

Hej! Avlägsna och ersätt DPF med raka rör, och lämna sedan in bilen för att få ECU-mjukvaran anpassad för utan DPF. Inga konstigheter. Jag avråder från att bara tömma innehållet i DPF:en

@@bkorvenkörde du svetsade rör för dpf eller typ v-band? Tänker för besiktningen?

@@MrToastyman900 Svetsade rör, faktiskt! Gått igenom besiktningen hittills iaf, de senaste 13 åren sedan det gjordes 😁

@@bkorven bra att veta! Närmar sig lite trim för min del, har beställt specialtillverkade insatsfilter från BMC och ska köra skräddarsydd mjukvara med DPF delete till en början, möjligtvis även TCU-mjukvara, ska bli kul att se vad man kan få ut för siffror/100-200kmh tider osv😁

@@MrToastyman900 Vad spännande, låter inte dumt! Hoppas slutresultatet blir bra! 😊

I loosened the intercooler, and let the manifold be. Yes, note that the pipe sits firmly to the manifold! I also had to deal with that. You'll want the manifold in place to hold back while you pull and jerk! Use penetrating oil and be persistent, haha!

Correct

@@bkorven thanks

@@user-io8mv5qf5i You're welcome!

Hey! I used google translate for your comment, so I hope I got it right. I have deleted DPF and rear mufflers, and not just the mufflers. Also, the sound is slightly louder in this clip since the variable vanes of the turbochargers are fully open. Blocking the EGR is a multi-step procedure, and difficult to fully describe in a comment. However, the EGR can be setup to be shut via software too! Thank you very much for your comment!

21 hp (393 -> 414)

You mean fake badging? Nope! 😂

I just connected them again, after having installed my block-off plates. With correct modificatios to the ECU-software you should not have any problems, I guess. Have you modifierad the software?

@@bkorven I let modificate my ECU Software, with EGR Off and DPF Off and the two Sensors Always Set DTC

@@geraldwildemann6225 That's odd. I feel like your problem might be unrelated to the EGR. What is the code?

The DTC Codes are 2654-8 and 2689-8 with autel diagnosis.

@@geraldwildemann6225 I don't manage to find any information about those fault codes at all. I suppose they are Autel-specific, but not even when looking at their list do I get any results. Anyhow; the Mercedes fault code you should be expecting by blocking off EGR should be "P0401:Exhaust Gas Recirculation Flow Insufficient Detected". But that code is gone with EGR-off in ECU-software. Can you quote the DTC-description you have for those two codes?

Interesting. I won't be needing that anymore now that the EGR is inactive, but I'll look it up.

Still working! 7G-tronic has held up brilliantly. I suppose, however, that the torque is electronically limited in lower gears.

Hey! I'd say that you should be prepared for not being able to find any ready-made exhaust system for your car, since it's so rare. But having a custom-made exhaust system (preferably straight pipes 😉) made for you should not be any problems. There are definitely several forums for diesel guys in general, that I bet are great! Otherwise, I've started a facebook-group for owners of cars with OM628 & OM629. Among other things, we help eachother out with project plans and the like. You are welcome to join, if you'd like! Thanks for your comment!

Thank you so much for your response, Im looking forward to make a clean build because it only has 100.000km and these cars, in good condition, getting more expensive at the market at the time. I would love to buy a straight pipe exhaust and the fact that it has no dpf is great, even if its not legal in austria but who cares haha. Im sure Kleemann do a good job, can u tell me how much u paid for the custom made exhaust? Sure Im joining the forum on Facebook and Im thankfull that there are guys like u wich are responding. By the way I know u getting many compliments for your car but all I want to say is ur E420 is amazing und pls keep it😂

I'd say around 14 s

@@bkorven with 414hp 1000nm i would think 12 seconds i would like to see a draggy measurement from u

@@MrRinor1997 Not impossible, but it's a heavy car! I'd love to do a measurement someday. Will try to make that happen!

@@bkorven get a draggy or post a closeup video of 80-220 u can know close how it is , i drive daily at 15.5 and an e420 with 340hp was 3 length cars faster than me so that one should be below 14 i can imagine urs close to 12

@@MrRinor1997 Hmm I see. I think 12s is a little optimistic, haha! If you're doing 15.5s 100-200 I actually believe 14s is a reasonable guess for mine. Anyhow, a proper video with measurement would be nice.

Because it is? 😂🤷‍♂️

I guess it does sound somewhat like a V8! 😁

@@cihans4923 it.s a v6

@@td4speed I thought you were fooling around at first, but this actually is a V8 (OM629). The V6 (OM642) you're thinking of is found as 280 CDI, 300 BluteTEC and 320 CDI. So that's why it sounds like a V8! You've got good ears, though, haha!

@@td4speed no dumbo

Thank you! Nice, the E320 sounds great with modified exhaust.

@@bkorven Please,can you recommend me a good exhaust mod for my E320,do i do quad AMG pipe or stock dual pipe.

​​@@valilucy9281 Sorry about my late response. Is it the CDI? If so, I'd first of all suggest to go with straight pipes, eliminating/deleting whatever exhaust components (one at the time, if you'd like to test the sound in steps) there are that reduces sound level and flow. In other words, save money and don't bother with any after-market mufflers. If it's the petrol you should be more careful with the exhaust to make it sound nice. I'd personally start with a resonator delete, replacing it with an x-pipe. Having quad tips or stock is just a matter of preference. I love the stock tips that come with the Sport Package, and would myself at this time probably keep them. Again; preference 😁

@@bkorven Its CDI,and yes sir i will keep the dual pipe from sport package.Thank you for the answer.

@@valilucy9281 Happy to help! Hope it works out nicely for you!

Hello! It is definitely not too loud for everyday driving. When driving with windows up, it is hard to tell a difference from stock. No drone at all.

@@bkorven thank you i’ll do it!

@@lampkadoziemniakow7902 Nice, go for it 🙂