Great video !! Thanks for all you do to show us how best keep this oldies on the road .

Oh my!!, I bought the Doomsday diesel egr delete and the Alda delete for my 1984 300 sd , it is an INCREDIBLE difference!! I just drove 35 miles where there is a hill that it usually has to downshift to get up it, it climbed right up the hill no problem without downshifting! It’s sooooooo much smoother transmission shifting too, it probably was leaking vacuum internally . I cannot believe the difference in power and transmission shifts. I’m impressed,Impalaman. Thankyou for your video.:)

Mr. Impalaman, the ALDA is quite a piece of equipment to be wreck-end with…… One precision part which has been hailed by the American Toupee Manufacturers Association as a true money maker. Altitude presses the pin down, reducing fuel amount (leaning out) and pressure from turbo charger pulls pin up which increases fuel amount (enrichment). The two internal altitude capsules tend to crack overtime and no longer function as altitude sensor because they have lost their internal vacuum which then in turn causes an inconsistent fuel amount as you outlined in your theoretical abstract of the whipsaw acceleration phenomenon, commonly better known as “F…. up ALDA”. With many greetings, your Buddy Peter from Kansas. Keep up the good work!

I just deleted the egr and the Alda both from DDD , the Egr plug didn’t work it was way to thick it didn’t fit in the factory clamp so I just cut the factory flex tubing where it was straight, smashed it flat and bent it over twice and reinstalled it on the exhaust manifold. The Alda was super tight on my injection pump and since I had no idea what the size wrench I held the big bottom nut with a one and one 1/16 wrench and used a small ball peen hammer to loosen the Alda assembly and it came right off. On my road test I did absolutely notice a smoother acceleration and more low end power than before and more zip while cruising. Thanks Impalaman !

I’m certainly glad this worked out for ya! I would still check your turbo output. I heard these guys are supposed to put out 9-10 psi about although I’ve heard folks do bump it up a number or two. I guess the waste gates get a bit sticky 🤣. Well done on the video!

Good job. My 81 is pretty punchy on the taking off.....Thanks for sharing.

Just did the egr delete on my 85 300sd .what a difference. My mercedes mechanic told me not to mess with the alda because of how delicate they are. But already bought the kit. Foing to do it this tuesday. As well as fixed my burned out cluster light bulbs with LEDs.

I got rid of the factory ac GM setup and went all Japanese air conditioning kit from a company in California. My condenser ruptured and the man made me one up

I’d imagine with the DD Stock Pump Turbo with the Alda Delete would have a lot of torque as the turbo will be at 5psi by 1500 rpm when the stock turbo doesn’t build boost till 1800rpm

On my car the witch over valve was done for. Once I bypassed it, i got my boost back. I had off idle drivability issues as well. My Alda still has the factory rubber plug on it so it's never been touched.

Before you plug that port on the intake manifold. It would be a good spot for boost gauge

Nice video very good content. Question mine doesn't have that switch over valve is that normal not to have it . The hose from intake goes straight to Alda. Thanks

Didn't know a ALDA delete kit was available. I wonder if Pierre would approve of this modification.🤔

Definitely will be doing this soon

I assume ALDA is an acronym. What does it stand for, and what exactly is it supposed to do? Is it some sort of fuel pressure regulator and will removing it affect your fuel mileage?

Have you determined the mpg affect? Any other post delete comments?

Im definitely doing this asap. I have terrible off idle power. I'm rebuilding the turbo aswell because it's shot. Anyone ever tell you that you sound like Jeff Foxworthy?

So do you leave whatever is in the hole where you just removed the Alda in? Or?

Mike, why was the ALDA there in the first place? What are the risks in deleating it? Do you know if the 603 has an ALDA? THANKS! 🙂

Isn’t messing with the ALDA bad for the motor and turbo?

What does the delete do to the fuel mileage??

Please message me the Alda delete kit price and where you got one, I need it !