Going with Badlandz brand. I've seen the QTP and liked them, but Badlandz has a 5 year warranty and a good reputation on the muscle car forums. They are about $150 cheaper than QTP for a complete 2.25" (or any size really).

Sorry, I didn't mean you were loosing the mufflers altogether as, I agree, that would be very loud to live with at all times. I meant you were going to have the cutouts at the back so when you opened them, the exhaust would not being exiting the mufflers, but would exit the cutouts.

I'll take a look at those vids today and see if that changes my plans at all.

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2005 X5 4.4i Build 04/05 Maintenance/Build Log
Nav, Pano, Sport (Purchased 06/14 w/ 109,000 miles) (Sold 8/15 w/121,000 miles)

2006 X5 4.8is Build 11/05 Maintenance/Build Log
Nav, DSP, Pano, Running Boards, OEM Tow Hitch, Cold Weather Pckg (Purchased 08/15 w/ 90,500 miles)

2010 X5 35d Build 02/10
Nav, HiFi, 6 DVD, Sports Pckg, Cold Weather Pckg, HUD, CAS, Running Boards, Leather Dash, PDC, Pano (Purchased 03/17 w/ 136,120 miles)