suuuup. totaly pointless thread but i want to find the damn answer!

basicaly, i want to make more noises and have more fluttering! ive no dumpvalve,a fmic, an air filter and an aluminium pipe from turbo to filter.

ive been looking into it a while, and it all seems to depend on pipe lenghths/thickness etc

even before i put on my fake screamer pipe yoke it made feck all noise, but these nz boys are getting mega cool noises! how?!

http://www.youtube.com/watch?v=adizt4ZXwrA