Is the boost signal actually reaching the Alda? There will be a switchover valve on the inner fender than controls this...try bypassing it.

Heh. Picture is worth a thousand words. Thats not an ALDA, which begins to raise ALL KINDS of questions. Starting with... You aren't in the US are you?

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Hehe, thx Not so much because of me, but still

I'm from Norway actually, should perhaps have mentioned it earlier.
However, that IS the ALDA unit. I know because I have dismounted it and adjusted it. It just looks a bit weird in that picture

BTW I'm horribly embarrassed now. I was looking to adjust my bowden wire to the transmission, and while doing so I checked the throttle cable as well - turns out it had huge amounts of slack in it Was flexible by like 1 cm.

In my defence, I did a while ago have a friend of mine check the linkage while I was in the car pushing the accelerator. Guess he must have missed that.
Also, I CAN'T BELIVE that PO, which owned the car for 10 years straight, never realized that it was so bad!

The rack that the accelerator wire hooks into also seemed to be a bit rickety.
Is it possible to get a "kit" to refurbish these connections?

0-60 time is around 14 seconds now. Still want more speed

MY GOODNESS ! Is THAT your engine? Very clean, very nice.

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I've never seen an ALDA like that.

ALDA:
ADA:

Maybe perhaps you are not getting enough fuel with that unit? I am very incredulous that it is correct.

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1995 E420 Schwarz
1995 E300 Weiss
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#1991 300D Nearly Perfect
#1994 E320 Cabriolet
#1995 E320 Touring
#1985 300D Sedan
OBK #42

I'll be adjusting the IP today. Can get some photos of my ALDA when I do it, I don't quite remember how it looks anymore

Now I've adjusted timing of IP so that it is 2 degrees earlier than stock.
I also turned up Full load screw and idle adjustment 2 turns.
I pulled the cruise control unit with the throttle linkage to get access to backside of pump. First time I did it took maby 1 hour counting assembly and disassembly. Adjusting the timing took quite a bit longer
If someone's interested I took some pictures, however the Full Load screw got left just out of it



Oh, and I got a picture of the ALDA.


0-60 is down to 10,8 secs now. I still haven't gotten hold of a boost controller, so boost is stock. Hoping to push under 10 secs when I up the pressure a bit

How much boost is recommended for upped IP?

Haha, thanks brian

That is not an ALDA, that is an ADA. ADA adjusts for altitude and not boost. You're missing out on a lot of fuel.

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1995 E420 Schwarz
1995 E300 Weiss
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#1995 E320 Touring
#1985 300D Sedan
OBK #42

Hmm, if that's correct that is really strange! I was under the belief that all om603 turbos were equipped with ALDA originally?

I have to check engine code on car tomorrow to be sure that this is an original turbo engine.

Even if it is only an ADA unit, would it restrict the amount of fuel?
I would like to think that it would be like I had removed the ALDA altogether, and it would be getting max amount of fuel as soon as I press down the pedal

Anyone got some hints regarding my transmission btw?
I have checked vacuum input from VCV and it seems about right. Been toying with the bowden cable as well as the vacuum modulator on the transmission housing.
Having a bit of trouble getting it to shift early enough for my taste. I have to almost release the throttle altogether to get it to shift up to higher gear.
If I hold like 1/5th depressed pedal, 2nd gear will go to like 3500 rpm before changing.
The bowden cable is about as slack as I think it can be, but it haven't made much of a difference.

What could be the cause of this?

An ADA adjusts fuel quantity up as you go up in altitude. EG more fuel for less pressure. You are adding more pressure and getting less fuel!

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1995 E420 Schwarz
1995 E300 Weiss
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#1991 300D Nearly Perfect
#1994 E320 Cabriolet
#1995 E320 Touring
#1985 300D Sedan
OBK #42

Thanks winmutt, I never would have realize it was not an ALDA unit if it hadn't been for you
Will try removing it altogether and see if I'm getting better performance

Ok, so I pulled the supposed ADA unit from the car a while ago. There was no change in performance, but I noticed the car smokes more now when I slam the accelerator.
So today I finally got around to checking up the part #, and when I typed it into google the top hits reads "ALDA"
But just to be sure, I was hoping someone here could positively identify my unit.

Wow with that cap on top it certainly appears to be an ALDA, unlike one I have ever seen before.

__________________
http://superturbodiesel.com/images/sig.04.10.jpg
1995 E420 Schwarz
1995 E300 Weiss
#1987 300D Sturmmachine
#1991 300D Nearly Perfect
#1994 E320 Cabriolet
#1995 E320 Touring
#1985 300D Sedan
OBK #42