I don't understand. Why are you wanting to get rid of the DISA? Is it broken?
If you're a cheap ass you can take the flap out and just reinstall the DISA. That would technically delete the DISA. But your car will have a weird power band and won't be smooth anymore.
Once again, why are you wanting to do this

 

It was completely broken, the entire mount for the flap was broken off when I got it so I am on the market for one but I have several other things to attend to that is a much higher priority. It's a car I'm pretty much bringing back from the dead and I am doing a little bit at a time which is why I just temporarily sealed it off for the time being.

 

You did already seal it off?

 

The entire reason the DISA is there is to give you the effect of variable geometry of the intake manifold, so you can have a different air path for low end power than you have for high end power. This is fairly high tech stuff, which came from F1 racing engines. I may be off on the dates, but this was a big thing in racing back in the early 90's, when they found a way to have an intake that was tuned for both low end and high end power. Before then, all intake manifolds were just a compromise between the two, for the most part.
The same thing applies to the Vanos. The idea of having a variable cam was something that race teams worked on for years. There was a ton of trial and error involved in making it work.
The fact that both of these technologies crossed over from racing to production is even more amazing when you consider the fact that they had to make it reliable, and it had to do so with minimum maintenence, which was not an issue for race engines. I don't think people appreciate the amount of work and engineering it took to convert high end racing technology to a production car. I really don't think many people even realize how advanced these engines would have seemed 20-25 years ago. This kind of stuff was an automotive engineers wet dream. Now, it is just something else for us to complain about when it breaks.

To answer your question, you most likely could block off the DISA port, and run without it. Your low end torque would suck, and you would probably get an SES light because of the missing DISA, but it would run.

 

on this engine, yes...

 

Get a G.A.S. rebuild kit if you cant shell out for a new unit.

 

You dont NEED the disa, however it improves power delivery, throttle response, and fuel economy.
On a race car build a lot of people will delete the DISA and VANOS, because when you are on a track if you are below 3.5k RPM your doing something wrong.'

However in real life people spend the majority of their time under 3k RPM and so the DISA and VANOS are pretty good things to have.

 

A whole lot of the **** in this car you don't "need" to run it, but what's the point of owning a BMW if you're just going to trash it all?

 

Ford calls it imrc, I think...not that advanced, and not a major difference in the tq curve. However, you're going to trip a MIL without it.

 

I removed my Vanos and installed a V-TEC system instead. I can easily chirp 5th and leave the atmosphere once VTEC kicks in, yo.

 

Yes it's necessary. It's there for a reason.

 

I actually did try to remove it and cover the hole. What you will get is poor torque on take-off and the idle speed will always fall down to 500 before stabilizing. So basically the engine will be out of tune in low RPM range. I removed it only to confirm if it is really faulty or not. (it was, so I bought a new one)