I'm utterly rubbish at making tie fighter noises but I have found that its little effort and loads of fun to have the starwars.com soundboard open during a game so for particularly good kills or manouvres you can make the noises.
I usually keep it open on 'x wing vs tie fighter' but there are sound effects for most the ships and characters lifted directly from the films.
I always use a playlist with tracks solely from the Star Wars trilogy (recently I may have let one or two prequels in....)
But this does just add that little bit extra. I like how you can put them together to make a small scene. Adds a bit more depth. Thanks for the find!
I tend to leave it open on the dogfight effects and then if anyone blows up...or pulls off an amazing manouvre or gets a critical in we play the appropriate sound effect. You can't do it all the time as it would put about 15 minutes onto the length of your game 
This is what I use. Don't know if it's available for iTunes, but I have it on my Android devices.
https://play.google.com/store/apps/details?id=com.dylanp.xwingsoundboard
I took the soundtrack & effects from X-Wing Alliance, converted them to .wav files and play them from my phone when anything ridiculous happens*
*in other words, every 30 seconds
I'll see if i can get that as an iphone app. I have 'star wars dice' but tbh it takes more time than using real dice unless you're flying identical ships!