Easy Reversible EGR delete, 95,96,97 Non-Turbos - Page 3 - PeachParts Mercedes-Benz Forum

JimmyL · #31 10-21-2010, 09:18 AM

Quote:

Originally Posted by alphadeltaromeo

I'm happy to retract my question in this particular thread, but I'll say that my intent wasn't to get folk to "bite" on this. It was a simple question, based on my lack of any experience, that was meant to enhance my understanding. That's all. There's no need for that sort of response towards me.

Thanks, anyway, for posting the pics on the mod...it certainly helped me improve the performance of my car.

Andy

That wasn't meant harshly Andy. It was more of a tongue in cheek thing.

Sorry for the misunderstanding........
Yep, the mod does help doesn't it!

alphadeltaromeo · #32 10-21-2010, 11:43 PM

No worries...perhaps I was tired from the day and such...appreciate the thought

The mod helps amazingly well. I'm rather impressed with the change. This is the first time since I've owned the car that I feel it breathes well with no hesitation. I'm trying to discern something though. Since the modification (and perhaps the cooler weather+winter fuel), a surging issue I've had at certain speeds (45-60mph) has disappeared. The surging would happen if at between those speeds, I just held the throttle constant...it would start to surge, but would easily stop if I pressed the peddle a bit.

I'm wondering if the mod had anything to do with it, allowing the car to breath better and have a more efficient burn. My initial response is to say no...

JimmyL · #33 10-26-2010, 02:36 AM

Quote:

Originally Posted by alphadeltaromeo

No worries...perhaps I was tired from the day and such...appreciate the thought

The mod helps amazingly well. I'm rather impressed with the change. This is the first time since I've owned the car that I feel it breathes well with no hesitation. I'm trying to discern something though. Since the modification (and perhaps the cooler weather+winter fuel), a surging issue I've had at certain speeds (45-60mph) has disappeared. The surging would happen if at between those speeds, I just held the throttle constant...it would start to surge, but would easily stop if I pressed the peddle a bit.

I'm wondering if the mod had anything to do with it, allowing the car to breath better and have a more efficient burn. My initial response is to say no...

Mine never had that surging issue so I don't have a personal point of reference on that one.
However, it that issue disappeared after this mod then you certainly can't rule it out.

BTW, it doesn't appear to have affected my fuel mileage.....

PARDS2 · #34 11-09-2010, 05:09 PM

Put a K&N filter in, it needed lots of modification to fit right. Then I started throwing codes--po200. Also did the EGR mod, but put a larger filter (3"x3")on the EGR. Took K&N out threw it in trash, put back the old stock air filter. Ran for 50 miles--no codes.
Yeah--Not so fast! PO200 returned this morning. May try a smaller filter on EGR or return it back to stock. Love these mods (sometimes), they are fun to try, but sometimes they run into a bag of worms

Chris W. · #35 12-08-2010, 01:43 PM

Well, count me among the converts. I just did the mod this past weekend on my 330K 1995 E. The butt dyno feels that the car has more oomph in second and third, and also when cruising at 60 - 70. It kicks down without having to floor it, seems more natural now and less forced.

Also for the night time rear view mirror smoke-o-meter I definitely feel that I'm seeing less smoke.

Rgds,
Chris W.
'95 E300D, 330K

awt356 · #36 12-17-2010, 03:10 PM

Just did this to my 95 E300D by doing the following:

1. The large butterfly in the intake tract is held to the shaft by two screws. Remove the screws and pull out the butterfly. The shaft can now rotate to any position, but you're only drawing in unrestricted fresh air from the air filter box.

2. Remove the metal gasket between the EGR valve and the intake manifold. Using sheet copper, make a block-off plate in the shape of the original gasket (bolt holes only, no opening for exhaust gas). Reinstall EGR valve using the copper block-off plate in place of the original gasket. The EGR valve can open or close, but no exhaust gas reaches the intake.

Car runs much better!

ROLLGUY · #37 12-22-2010, 10:42 PM

Quote:

Originally Posted by alphadeltaromeo

Since the modification (and perhaps the cooler weather+winter fuel), a surging issue I've had at certain speeds (45-60mph) has disappeared. The surging would happen if at between those speeds, I just held the throttle constant...it would start to surge, but would easily stop if I pressed the peddle a bit.

I'm wondering if the mod had anything to do with it, allowing the car to breath better and have a more efficient burn. My initial response is to say no...

My E300 has that exact surging problem. Accelerating or decelerating, no surging. Surging only on even throttle. I will do the EGR delete mod as soon as the weather clears up (and I find the proper size BB's). Hopefully the surging will go away.

WINGAS · #38 06-17-2011, 10:16 AM

There is only one size BB.

Well, did the BB trick on my 96 and once it got up to operating temp, it threw a CEL. Not in limp mode like the 97 did, but its still on. I'll run it this way for a bit to get some data. ( the CEL on my 95 Tahoe is permanently on at op temp due to EGR disarm).

Im going to borrow my buddy's reader and see what's shaking.

ROLLGUY · #39 06-17-2011, 11:02 AM

Quote:

Originally Posted by ROLLGUY

My E300 has that exact surging problem. Accelerating or decelerating, no surging. Surging only on even throttle. I will do the EGR delete mod as soon as the weather clears up (and I find the proper size BB's). Hopefully the surging will go away.

I removed the plate in the EGR diverter valve (I think that is what it is called) rather than wiring it open, and I made a block-off plate for the EGR to replace the gasket, rather than using a BB to block the vacuum.

johninva · #40 06-19-2011, 08:42 AM

Just did my 96. Removed butterfly flap and plugged vac line to egr with a tee it threw P0400. So I reconnected the vac line and replaced the gasket between the egr and the intake tube with a blocking plate - now it throws P0120. Any ideas, I didn't think the 96 was supposed to trow any codes based on others results

johninva · #41 06-19-2011, 09:34 PM

I would say based on today's trials that the only way to get the bypass done on the 96 without a CEL is to block off the port on the exhaust manifold and add the small filter to the input side of the egr. Appears the egr can sense lack of vac control to it and can also sense flow through it. So no bb and no tieing the flap open or removing the flap, and no blocking between the egr and the input tube. Even with the filter on the input side of the egr with the flap missing I suppose there was not enough flow through the egr itself and it was still throwing codes until I put the flap back in.

jmbeam · #42 10-03-2011, 10:01 PM

With this mod is there anything that needs to be addresses with the crossover resonance pipe and the butterfly valve in it? Should this be removed or blocked also?

jmbeam · #43 10-03-2011, 11:38 PM

Is it me or did others witness the same loud nailing especially on acceleration after deleting the EGR? Its very loud on acceleration.

z3ds · #44 04-08-2012, 09:42 PM

Quote:

Originally Posted by awt356

Just did this to my 95 E300D by doing the following:

1. The large butterfly in the intake tract is held to the shaft by two screws. Remove the screws and pull out the butterfly. The shaft can now rotate to any position, but you're only drawing in unrestricted fresh air from the air filter box.

2. Remove the metal gasket between the EGR valve and the intake manifold. Using sheet copper, make a block-off plate in the shape of the original gasket (bolt holes only, no opening for exhaust gas). Reinstall EGR valve using the copper block-off plate in place of the original gasket. The EGR valve can open or close, but no exhaust gas reaches the intake.

Car runs much better!

I followed this method and it worked great. Everything looks stock on the outside. The car seems to run better now. Thanks!

shertex · #45 05-20-2013, 06:04 PM

Really sounds like a very straightforward solution...can't wait to try it! Should solve the slight speed variation problem I have which I believe is due to that vacuum regulator (at least according to the PO).