Look at M.B.DOC's signature - "27 YEARS DEALER M.B. Shopforeman." Having him teach you how to disable your EGR is illegal and probably not worth risking his career.

You seem to have a plan. Why don't you just try it and see if it works?

BTW, that option wouldn't work on a VW TDI because the EGR is after the turbo so the positive pressure would blow air out. I haven't looked at the 99 MB to see how it is plumbed.

__________________
Rick Miley
2014 Tesla Model S
2018 Tesla Model 3
2017 Nissan LEAF
Former MB: 99 E300, 86 190E 2.3, 87 300E, 80 240D, 82 204D Euro
Chain Elongation References

Understood.....I certainly didn't mean to offend anyone.

It's more or less just a interest then anything else. I'll post results if I attempt anything. It will of course be for off road use.

I just sold my 02 TDI loved the car didn't feel like doing a timing belt every 80k though. Check out the TDI Forum and the Epsilon device. However this Mod would actually work on the TDI since the EGR Valve is closed when the manifold boost exceeds that of the ambient air. So Turbo or not it is possible

As for your 99, you could chip the car, it should make serious mods to you EGR operation, check out upsolute. Their ECU chips run around $350 installed and are impressive on turbo powered cars, had one in my TT went from 225 hp to 252 hp and 280 NM 338 NM.

A 99 Mercedes E300 will go from 177 hp to 205 hp and 330 NM (243 ft / lb) to 378 NM (279 ft / lb). Yep 280 ft/lb's of torque. And increased MPG too!

Tinkered with the car last night................A breath of fresh air . She runs nice and clean with no other issues. I figure just the CCV oils will help keep the resonance valves lubed and free.

If anyone would like to see pics, email me.

Now I just need to figure out how to mount the Tahoe wheels on the Benz since she is for off road use only.

Love this fourm.

That's all well and good if you can get the local So Cal UPsolute rep to do the work, or anyone else for that matter!
He delayed for over two months (couldn't get a commonly available chip!) and then the latest excuse was that he had to help someone evacuate because of the fires. This was after claiming that he hadn't received my email verifying the appointment he'd offered me and giving me only a few hours notice. If I hadn't checked my emails, I'd have driven the 40 some odd miles to his house to find him gone. Very independent to say the least. Writting to the head guy in N C, I received no answer at all. They plain just don't give a dam, and I cannot trust my expensive ECU to those types!
BTW, the charge was to be $425. And I think only the boost is raised, as there is no electronics to the injectors or pump as there was in my TDI.

Speedtuning charges only $275.

Good to hear that you were able to block off the action to the EGR, and not set a code. I'll have to give that a try. Of course for off-road purposes only, when I go cow-trailing it!

Well, this is the result.

The engine draws clean air through a Breather Filter rather then soot filled exaust. The entire mod cost 11.00 for the filter at Auto Zone. Engine seems to have more power in all ranges.

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Top view

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I feel there is no need for apologizes on this board. After all, we are all junkies looking for a place to talk about technical stuff.

I have to admit your "breath of Fresh air" is a very simple yet effective idea that has me thinking why do people spend so much time trying to disconnect the EGR when you can just plumb it to suck fresh air?

Bravo 97 E300D!!!

Please keep up us updated with your findings.

As long as all the sensors are "upwind" from the EGR there should be no problems indicated for the ECU to adjust.

Has anyone tried this filter on a 98-99 e300td yet? I assume it would replace the rubber covered pipe,coming out of the head cover. The line that feeds into air intake just ahead of the turbo.

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1998 E300Turbodiesel
1980 300d

Ready- Ronnie

ready-ronnie - I think the tube you're talking about is the crankcase ventilation line, not the EGR. The EGR on ours is under the intake manifold. The simple filter idea wouldn't work, because the EGR is located in the high pressure portion of the intake (after the turbo). It would blow air out instead of suck it in.

__________________
Rick Miley
2014 Tesla Model S
2018 Tesla Model 3
2017 Nissan LEAF
Former MB: 99 E300, 86 190E 2.3, 87 300E, 80 240D, 82 204D Euro
Chain Elongation References

Rick Miley,

I think you should better understand the process of how the EGR valve functions before denouncing the idea on a Turbo. It will work....... Remeber the EGR Valve is still fully fuctioning on this mod.

If you were correct and it would be blowing air out of the "breather filter" then it would also be blowing air out into the exhaust manifold as well, when hooked up in the stock configuration. I don't think the engineers would what to "Create" a manifold leak.

Look at it this way, in order to blow air out the EGR valve and hence out the filter. The intake manifold pressure needs to exceed that of the ambient air pressure 14.7 PSI (sea Level). This may be the case at High RPMS but again at high RPMs the EGR is closed.

To see it another way there is really no such thing as "suction". In an engine the pistons do not really suck air in through the intake, but rather create a partial vacuum in the cylinder and the outside air pressure rushes in to fill the vacuum at 14.7 PSI. Also as valves open and close faster at higher RPM's there is not enough time for all the air to fill the vacume in the cylinder to make 14.7 PSI a turbo or supercharger can help to balance this out, in an over booted engine it can pump in more then 14.7 PSI. Again the EGR valve would most likly be closed.

In aviation most turbos do not over boot an engine, the proccess is termed turbonormolizing, as the air get thinner as you fly higher the turbo creates the same manifold pressure as at sealevel.

Ok I get carried away.....

The location of the EGR valve on the turbocharged engine is "after" the turbo in the intake stream, but "before" the turbo in the exhaust stream. So the exhaust is under enough pressure at that point to overcome boost pressure on the intake side. And don't forget they're using both Mass Airflow Sensor and Manifold Absolute Pressure sensor to monitor this engine. It is a more sophisticated setup than the non-turbo.

__________________
Rick Miley
2014 Tesla Model S
2018 Tesla Model 3
2017 Nissan LEAF
Former MB: 99 E300, 86 190E 2.3, 87 300E, 80 240D, 82 204D Euro
Chain Elongation References

I believe your talking out of your pie hole. But (no pun intended) if you believe that the turbo can sustain over 900 mbar which is 13 psi of "positive pressure" as 3.0 liters of cylinders request that air, and lets not forget the EGR is "CLOSED" at this time, then you may be right. 900 mbars is not allot on a turbo, 2200 is allot.

But again lets state known facts not assumptions. Go to the numbers and determine if the intake system really is under "positive pressure" over 14.7psi while the EGR valve is open. I would love to tell you your are wrong but I won't claim to know until I know. I would hate to inhibit creativity just to sound like a know it all. After all Turbo's do pump allot of hot air.

At any rate the fight is not over they do make one way check valves. Also don't these cars have "DEVERTER VALVES"

This is fun, almost more fun then working on a car.

1 millibar = 0.0145037738 pounds per square inch

Getting closer to the truth:

All these forced induction engines are under 1 bar or 14.7 psi ,so they would be sucking air through the EGR filter not blowing.

Not a 98-99 but it does give a comparission:

What turbo was installed on the 98-99 ?

83 300 sd Engine 617.95 Turbo Diesel
Turbo -Garret TA 0301

1000 rpm/100 mbar - 4200 rpm/700-730 mbar.

And the 2003 (Twin supercharged Gas) E55 AMG engine makes a towering 469 hp and a massive 516 lbs.-ft. 0-60 mph in 4.5 seconds.

It Generates a maximum of 11.6 psi (or 0.8 bar) of boost pressure. .

97E300D


How is the EGR mod working out. I'm thinking of doing it soon myself

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#dieselFLEET
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'97 E300
'99 E300

The Mod works Fantasic............. I only wish I had done it sooner. It is such a simple fix

I looked at your website. Nice rims where did you get them, E420's ?
I'm in the process of getting a second set of the stocks so I can run a full set of Snow tires. Right now I only have them on the rears but the slight tire size diff seems to throw off my Cruise Control (wheel speed sensors).

Anyone got one extra stock 10 hole E class rim 96-97