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Old 07-18-2017, 11:51 PM
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Originally Posted by X53Jay4.8is View Post
The Guy that makes the headers that was referenced by the OP is m5jed on the M5 board /forum. He is easy to get a hold of if you want to find out details of the headers and what they produce. I know him because I have an E39 M5 and have bought some parts from him. I just purchased a lightened dual mass flywheel for my clutch upgrade on the M5.
Good to know. But his results are S62 based I'm guessing. I'm curious what it made on the M62B46 the OP installed it on. The mod is cost prohibitive in my case (I've turbo'd cars for less) but the car guy in me still wants to know.

As I said, I'm trying not to be pessimistic... but I don't think these make HP enough to justify their cost. And I realize that is relative as well. My justification might be totally different than someone else's.
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)
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