I think the scientific background only helps with the accuracy of things, and I tend to be quite careful about that.
I think being a writer requires being able to think abstractly, which is quite the opposite to what's required to be en engineer, or any other kind of scientist, for that matter.
Like I said, going to Engineering School can only help with the logics in writing; you know that building a good, solid story with no plotholes or any other flaw requieres thoroughness, and that I've learned plenty in ES.