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#1
09-30-2011, 07:46 PM
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Installed Burger Tuning PBX in 2010 x3 xdrive
Seeing as BMW wouldn't do anything about the hesitation from a standstill & when accelerating from low speeds I decided to install a tuner. The Burger Tuning PBX fixed things up just fine. It wasn't too bad to install (was a bit freaked out pulling the ECM out) & definitely takes longer than the manual if you've never done one. The default "lag fix" program took care of the hesitation. Recommend it to anyone who's frustrated with the low speed drivability.
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#2
10-16-2011, 07:49 AM
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What year and engine? What on earth is a PBX?
__________________
2003 4.4i black ext./black int./black headliner (kid's runabout) 2014 535d X-drive, M package, silver/black interior Sold but not forgotten: 2009 E70 35d, black ext./black int./black headliner (sold 2021) 2006 4.8iS Le Mans blue/cream int./black headliner, SOLD in 2012 sadly... Other hardware: 2015 Cayenne S (wife's new DD and definitely wroooommmmm) 2016 Tundra 1794 edition crew cab, luxo hauler 2005 Tundra crew cab, weekend hauler. Sold after 150k very happy miles.
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#3
10-16-2011, 08:08 PM
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#4
10-16-2011, 08:23 PM
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It's a 2010, 3.0 engine. The PBX "Powerbox" connects to a handful of wires in series to the ECM. I'm not sure of its full scope but I know it does remap the signal from the throttle & reduces the lag from acceleration when not in sport mode.
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#5
10-17-2011, 10:54 PM
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Thanks - interesting, is this a common problem on all x3s?
__________________
2003 4.4i black ext./black int./black headliner (kid's runabout) 2014 535d X-drive, M package, silver/black interior Sold but not forgotten: 2009 E70 35d, black ext./black int./black headliner (sold 2021) 2006 4.8iS Le Mans blue/cream int./black headliner, SOLD in 2012 sadly... Other hardware: 2015 Cayenne S (wife's new DD and definitely wroooommmmm) 2016 Tundra 1794 edition crew cab, luxo hauler 2005 Tundra crew cab, weekend hauler. Sold after 150k very happy miles.
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#8
11-02-2011, 03:40 AM
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Our hesitation was most noticeable when moving at idle or just above say up to 15 mph. You jump on the gas (as in crossing a busy intersection or merging) & the vehicle doesn't respond at all for 1 second or so. It's just enough delay in busy urban traffic to put you in harms way if you aren't careful, that and it's really annoying.
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#9
11-11-2011, 02:17 AM
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Mine does that too, unless I drive in SD mode. When in SD mode it is always ready to go.
Normal D mode is more relaxed and has a delay. Mercedes is the same.
__________________
Dan 2007 X3 3.0si*titanium silver*black leather*steptronic*premium*comfort*activity*m sport*bluetooth
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#10
12-05-2016, 09:31 AM
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Frenchie, I purchased the PBX for my 2007 X3, but the connector colors and wires in their installation guide are different from the X3. How did you figure out how to wire it?
__________________
2004 X5 3.0 MT, custom exhaust, AFE intake, Shark Injector, Towing Package, 100K miles www.teamverploegen.com 
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