Ya i have only the resonators removed, but how diff will it make it sound wit the x-pipe what does the x-pipe do?

Tru-X crossover pipe represents a significant leap forward in technology over traditional H-pipes. The more gentle radius allows for better exhaust gas scavenging, noise cancellation and better balance between cylinder banks. The result is a significant increase in power and torque but a reduction in db sound levels... the best of both worlds.
-Taken from Magnaflow site...

hey ekaz do you have 4.4 x5 ?

4.8is