Well, then you need to describe the sound better, instead of trying to explain it through it's implementation, becuase you are describing a chorus. If you have an example of it's use, it can be helpful to mention that, and we here can find the song in question and have a listen.
To achieve a doubling effect (which you said above you wanted) you can either use a chorus, a very short fixed delay (which is basically the chorus without the LFO part) or some subtle pitch-shift. To get the more filtery whah-whah sounds you also described, you can, as I already mentioned, use a phaser or an LFO-driven filter (some auto-wahs do that).
Ah, so I'm not giving practical aid when I tell you how to do exactly what you ask? So, what should I do, read your mind? OK. Bzzzzzmmmmuuuuummm. OK, done, you are pissed because you think I made you look stupid. It's quite possible I did, even though that's not my intention. Get over it.
I have tried giving you advice on how to achieve what you ask for; I have also been nice enough to tell you that your technical implementation description is a chorus.
If you are gonne get mad at people for not being able to realize that you don't at all want an answer to the question you posed, but that you want a anser to a completely different question, then you are going to become angry very often. If YOU are unclear in your questions, that is not MY fault.
