Slightly revised version of submitted paper two days afterwards: will the editor be annoyed? so, I submitted a paper to a reasonably good journal, last week. The journal requires that the paper is formatted in a specific way (.tex class style provided by them). I did this, and saved the file in a different folder, to differentiate it from the version that I uploaded to my website. 

However, when I sent the file to the editor (there is no submission system, just e-mail the editor), I sent the wrong version. That is, I sent the unformatted version. That wouldn't be too bad though. The thing is that the formatted version contains some slight improvements to exposition (and a slight title change..). So I decided to e-mail the editor with the new version, right after he acknowledged receipt of my previous manuscript. 

I then realized that sending this to him would probably annoy the hell out of him, who is a recognized busy guy. Is this really a problem? I am really freaked out that this will create a problem with my submission.. I don't know whether acknowledging receipt means that he actually sent it to a referee already.
The more you wait the harder it gets to do that, there could be a pipeline that is already in progress. I suggest you send a nice email asking if there is a possibility to do this, and show that you would appreciate if he/she accepts the slightly updated attached version as the final version. 

Do not worry about making the editor mad, he/she took responsibility for taking care of this and should be prepared for and expect to deal with such situations. If you want to maintain a good relationship with this editor (in case you know him/her personally), then maybe you should weight the values of: your relationship with the editor vs the quality of the final version. Personally I would go for the latter, but this is your call.