Originally Posted by BMW-x5-48is

Guys, so I installed a H pipe after all.. (Cheers Turbo_Bimmer!) The shop said it will sound better over a x-pipe.... Maybe it was easier for them to do? or maybe they already had a H- pipe in stock.. who knows.. but they went ahead installed the H-pipe (3hrs labor + 80 bucks for the Hpipe) all I have to say is holly bejesus... once I got to the shop started it up it sounded almost like it did with the resonators.. but if you rev the 4.8is up the sound is the most sexy thing I have ever heard of in my life... it is simply like a wild animal is about to devour its food.. and the funny thing is that it seems quiet when just idling.. almost like before with the resonator... but once you hit the gas... all that changes... It has a nice deep v-8 sound to it when driving around normally (cruising) but once you rev pass 2500rpm the monster growl comes out & its insane!... I'll try to post a vid over the weekend.. so went with H-pipe after .. maybe in the future i'll switch it up to a x-pipe to see the difference... but for now Im happy & thats all that matters... and for the loss of power... i dont feel any difference.. I feel like the engine breathes easier & actually revs faster..