Odd noise during breakdown

[1350 Days]

What's this noise during the extended version of the breakdown? It sounds like a jet taking off.

http://youtube.com/watch?v=YIUMa5RGcoI&feature=related (at 4:16-4:17 and continuing)
http://youtube.com/watch?v=Qgfl04CeubA (at 4:42 and continuing)
http://youtube.com/watch?v=rnaCgZsiixY (at 4:38 through that phrase)

It sounds like Justin is doing something, but I don't know what.

[][ncognito]

I'm pretty sure all 3 clips are Justin doing various things. While Adam plays the standard extended version riff, Justin seems to mix up what he does.

The first clip you posted sounds like the same effect he uses in The Pot, using the Foxx Fuzz/Wah.

The second seems similar, might not be the Foxx, could be the Prunes and Custard pedal he used for a while which is a distortion/synth type.

The last one is distortion and his BR-2 Autowah (as heard in Rosetta Stoned at 5:46)