I had a thought after reading a lot of DISA threads.

Some people do not want to do the G.A.S. rebuild on an old unit because other things (like the vacuum pot) can fail...rendering your $85 ineffective. Also, presumably, people would rather not spend the cash on a brand new OEM DISA or the G.A.S. gold if they can avoid it.

But what about taking a cheapy dorman and putting the G.A.S. kit (and awesome gasket) on it from the start? That would come in around 220...still saving money and having better reliability than any OEM unit, I would expect.

The failures of the dorman unit seem to be completely offset with the G.A.S. kit. But you get new vacuum and all that as well.

Is there something else about the Dorman ($120 that I can find) that makes it fail/bad?

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2001 E53 3.0 5pd