06-26-2012, 11:54 AM | #1 |
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2013 X3 M-Sport CLUNK CLUNK CLUNK
Anyone else have this issue? 2013 X3 3.5 M-Sport with paddle shifters, when pulling the plus paddle shifting from 1-2-3-4 under heavy load there is a THUD from the rear of the vehicle that you can hear and feel. This does NOT happen in "D" or "DS" mode but only when manually shifting and never unless there is a good load on the drivetrain. I have less than 300 miles on mine and dealer has just told me that "they all do that" which I do not believe at all.
I have the opportunity to return the vehicle to the dealer but really and truly like it so I'd like a resolution rather than a replacement. Any and all help appreciated. DW |
06-26-2012, 12:01 PM | #2 |
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Completely normal. Not too sure exactly what it is but all the N55 equiped engines have similar sounds under load. I think it has to do with the exhaust flap opening and closing. Mine does it too and I love it when it does.
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06-26-2012, 12:17 PM | #3 | |
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06-26-2012, 12:37 PM | #4 |
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If you're referring to the same exhaust boom I hear when shifting manually during acceleration, I love that sound. It got louder when I did the exhaust flap mod (by pulling out the plug that disables the exhaust flap). I'd recommend letting the engine break in a bit before making any determinations regarding this.
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06-26-2012, 12:41 PM | #5 | |
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06-26-2012, 01:49 PM | #6 |
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Yep, exact same symptoms of what you described in your OP. Don't worry about it, it just part of the ultimate driving pleasure
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2008 335i 6MT - Dinan tuned stge 2
1986 325es - SOLD 2012 BMW X3 35i AW on RB Msport - JB3 @ 4.0PSi over stock, 20x9F and 20x10.5R Stance SC-5ive, H&R lowering springs. - SOLD 2006 BMW 330i - //M rep kit with custom exhaust, H&R springs, 19" VMR - SOLD |
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06-26-2012, 03:09 PM | #7 |
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I love that thud sound as the car goes through the gears. P.s. Mine does that too.
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06-26-2012, 03:13 PM | #8 | |
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At least I have a project to keep me busy this week--I've got my 21" wheels and new Michelins to put on, AC Schnitzer lowering springs, AC Schnitzer exhaust, and JB Stage 1 to install tomorrow, so good times coming... DW |
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06-26-2012, 04:00 PM | #9 |
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Sounds good. make sure you post pics. You'll love the mods!
How much was that exhaust? Cat back?
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2008 335i 6MT - Dinan tuned stge 2
1986 325es - SOLD 2012 BMW X3 35i AW on RB Msport - JB3 @ 4.0PSi over stock, 20x9F and 20x10.5R Stance SC-5ive, H&R lowering springs. - SOLD 2006 BMW 330i - //M rep kit with custom exhaust, H&R springs, 19" VMR - SOLD |
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06-26-2012, 04:58 PM | #11 |
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Please post pictures when you're finished!
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06-26-2012, 10:33 PM | #12 | |
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JB for power... |
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06-27-2012, 12:46 AM | #13 |
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when you get it post videos... I am looking at exhaust but more looking to do down pipe all the way back.
Need more power
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2008 335i 6MT - Dinan tuned stge 2
1986 325es - SOLD 2012 BMW X3 35i AW on RB Msport - JB3 @ 4.0PSi over stock, 20x9F and 20x10.5R Stance SC-5ive, H&R lowering springs. - SOLD 2006 BMW 330i - //M rep kit with custom exhaust, H&R springs, 19" VMR - SOLD |
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06-27-2012, 02:26 AM | #14 |
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I'm not sure, but is it not recommended to not use the paddles during break-in? With only 300 miles you might want to check with the dealer.
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06-27-2012, 07:29 AM | #15 | |
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Personally, I say go easy for 1,000 miles, change the oil, and drive like you want to. I have owned only BMW's with the exception of my first car, a Honda Accord, and have followed this procedure with every car without issue. |
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06-27-2012, 11:24 AM | #16 | |
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06-27-2012, 12:35 PM | #17 |
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Haven't had time to do anything today, been crazy busy. Will have the exhaust on tomorrow sometime and I'll post pics and video as soon as possible. The lowering springs are likely manufactured by Eibach (thankfully not H&R) and are made to ACS specs. I have had ACS suspension in my E46 330, E46 M3, M-coupe, E70 X5 4.8, and E90 335D, and couldn't be more pleased with ride quality and handling.
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06-28-2012, 09:44 PM | #18 | |
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2011 MINI CooperS BRGII/Lounge Green/Sport/Prem/Connect/Black Xenon/Black Conical Spokes/ACS springs/ACS exhaust/Alta Shorty/Yokohama Advan Sport A/S
2012 M3 AW/FR NDH2/2MK/ZPP/ZCP/ZCW/752/6NR/OEM CF splitters/OEM CF Mirror caps (retired) 2012 X3 35i Titanium Silver/Black ZAP/ZPP/TECH/APPS/Breyton GTS (retired) 2018 X3 M40i BSM/Oyster/ZPP/ZPX/HK/S6CPA/718M(retired) |
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06-29-2012, 07:27 AM | #19 | |
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Sounds clips and video to follow soon. |
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06-29-2012, 07:33 AM | #20 |
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06-29-2012, 08:42 AM | #21 | |
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I have an idea of what your X3 will look like once complete. You are going to shock a lot of people in a good way These cars are infinitely mod-able AND under radar for enthusiasts at the moment. I think I am going to stick with the Breyton's for now, but I do have my eye on the Type VIII's Can't wait to see/hear the video/sound clips
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2012 M3 AW/FR NDH2/2MK/ZPP/ZCP/ZCW/752/6NR/OEM CF splitters/OEM CF Mirror caps (retired) 2012 X3 35i Titanium Silver/Black ZAP/ZPP/TECH/APPS/Breyton GTS (retired) 2018 X3 M40i BSM/Oyster/ZPP/ZPX/HK/S6CPA/718M(retired) |
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