Thump sound from exhaust under full throttle between shifts

mrpcar · 03-02-2013, 08:03 AM

Those with the X5M, have you noticed a thump sound from the exhaust when you do a full throttle take off between shifts?

It is definitely artificial, not sure if it was designed that way.

mrpcar · 03-02-2013, 08:24 AM

Did a google search and here is one editor described it. As a whomp sound. The BMW X5 M is a luxurious SUV with a heroic 555-hp, twin-turbocharged V-8 engine. So why don't I love it? Although the X5 is very, very fast and makes fantastic noises (including a loud whomp sound when the transmission shifts), it's not really that much fun. Watching the speedometer climb in the X5 M isn't as exciting to me as doing so in a true sports car or sport sedan. By my definition, sports cars thrill the driver at every opportunity, whereas this BMW simply goes fast without really getting my pulse racing.
That's not to knock the X5 M: if you want a high-performance SUV, this BMW is certainly a good choice. For my money, though, I'd go for the Jeep Grand Cherokee SRT8. The Jeep is pretty much as quick as the BMW, but has more attitude and looks much better -- for half the price.

Read more: http://www.automobilemag.com/reviews...#ixzz2MONBa4No

Die Wolfe · 03-03-2013, 01:12 AM

That shifting sounded real and not artificial to me...?

It's funny how people will argue for a better car vs BMW solely based on price or even speed. The overall quality of BMW, particularly the X5M vs Jeep SRT8, is incomparable.

mrpcar · 03-03-2013, 08:12 AM

Quote:

Originally Posted by Die Wolfe

That shifting sounded real and not artificial to me...?

It's funny how people will argue for a better car vs BMW solely based on price or even speed. The overall quality of BMW, particularly the X5M vs Jeep SRT8, is incomparable.

I didn't expect you would actually read the review. LOL!

I know it's real not artificial but doesn't anyone know the purpose of this action during shifting?

Die Wolfe · 03-03-2013, 10:49 AM

Quote:

Originally Posted by mrpcar

Quote:

Originally Posted by Die Wolfe

That shifting sounded real and not artificial to me...?

It's funny how people will argue for a better car vs BMW solely based on price or even speed. The overall quality of BMW, particularly the X5M vs Jeep SRT8, is incomparable.

I didn't expect you would actually read the review. LOL!

I know it's real not artificial but doesn't anyone know the purpose of this action during shifting?

I'm actually not that smart, I didn't read the review...just your excerpt lol! There was a similar thread with video (my way of reading haha) and this tool was talkin like the srt8 was that much better! Lol

JUSTIN335 · 03-03-2013, 12:54 PM

You mean the fart sound?? If so, then search it over on the F10 M5 forum, they seem to know all about it.

mrmomo313 · 03-03-2013, 04:53 PM

my s4 makes the same fart/blip on upshift. it has to do with the ECU retarding the timing and causing unburnt fuel to make it into to the exhaust. when it touches the hot exhaust, it ignites, making that sound. The hotter your exhaust, the louder the farts

Frank_NJ · 03-03-2013, 06:11 PM

I get that with my X5 3.5i when in Sport mode under full load

mrpcar · 03-04-2013, 08:17 AM

Ah! It's call the fart sound. Actually that's sounds about right. Fart sound! Thanks

Die Wolfe · 03-04-2013, 09:15 AM

Quote:

Originally Posted by mrmomo313

my s4 makes the same fart/blip on upshift. it has to do with the ECU retarding the timing and causing unburnt fuel to make it into to the exhaust. when it touches the hot exhaust, it ignites, making that sound. The hotter your exhaust, the louder the farts

Your last sentence can also be applied to humans!

VCP · 03-06-2013, 11:32 PM

its anti lag to keep the turbos spinning

03-02-2013, 08:03 AM	#1
mrpcar Second Lieutenant 30 Rep 207 Posts Drives: 2012 X5M Join Date: Dec 2011 Location: United States iTrader: (0) Garage List 2013 Toyota Pruis 3 [0.00] 2006 Porsche Cayenne S [0.00] 2012 BMW X5M [7.66] 2002 Ferrari 360 sp ... [0.00] 1999 Porsche 911 Ca ... [0.00] 2000 BMW 328i [0.00]	Thump sound from exhaust under full throttle between shifts Those with the X5M, have you noticed a thump sound from the exhaust when you do a full throttle take off between shifts? It is definitely artificial, not sure if it was designed that way. Last edited by mrpcar; 03-02-2013 at 08:17 AM..
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03-02-2013, 08:24 AM	#2
mrpcar Second Lieutenant 30 Rep 207 Posts Drives: 2012 X5M Join Date: Dec 2011 Location: United States iTrader: (0) Garage List 2013 Toyota Pruis 3 [0.00] 2006 Porsche Cayenne S [0.00] 2012 BMW X5M [7.66] 2002 Ferrari 360 sp ... [0.00] 1999 Porsche 911 Ca ... [0.00] 2000 BMW 328i [0.00]	Did a google search and here is one editor described it. As a whomp sound. The BMW X5 M is a luxurious SUV with a heroic 555-hp, twin-turbocharged V-8 engine. So why don't I love it? Although the X5 is very, very fast and makes fantastic noises (including a loud whomp sound when the transmission shifts), it's not really that much fun. Watching the speedometer climb in the X5 M isn't as exciting to me as doing so in a true sports car or sport sedan. By my definition, sports cars thrill the driver at every opportunity, whereas this BMW simply goes fast without really getting my pulse racing. That's not to knock the X5 M: if you want a high-performance SUV, this BMW is certainly a good choice. For my money, though, I'd go for the Jeep Grand Cherokee SRT8. The Jeep is pretty much as quick as the BMW, but has more attitude and looks much better -- for half the price. Read more: http://www.automobilemag.com/reviews...#ixzz2MONBa4No
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03-03-2013, 01:12 AM	#3
Die Wolfe Lieutenant 14 Rep 432 Posts Drives: '12 535i Msport/'13 X5///M Join Date: Apr 2012 Location: Northern California iTrader: (0)	That shifting sounded real and not artificial to me...? It's funny how people will argue for a better car vs BMW solely based on price or even speed. The overall quality of BMW, particularly the X5M vs Jeep SRT8, is incomparable.
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03-03-2013, 12:54 PM	#6
JUSTIN335 . 46 Rep 385 Posts Drives: 2012 535i m-sport Join Date: Feb 2011 Location: Carlsbad/Laguna Beach iTrader: (1)	You mean the fart sound?? If so, then search it over on the F10 M5 forum, they seem to know all about it. __________________ 2012 F10 535i 2013 E70 X5M 2007 E92 335i - sold
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03-03-2013, 04:53 PM	#7
mrmomo313 Captain 56 Rep 691 Posts Drives: M6 Gran Coupe Join Date: Sep 2011 Location: Michigan iTrader: (0)	my s4 makes the same fart/blip on upshift. it has to do with the ECU retarding the timing and causing unburnt fuel to make it into to the exhaust. when it touches the hot exhaust, it ignites, making that sound. The hotter your exhaust, the louder the farts __________________ 2012 X5M Monte Carlo Blue/Black-SOLD Velos Stage 2/Velos Catless downpipes/Dinan exhaust/Dinan Suspension 2018 M6 Gran Coupe Competition- Singapore Grey/Aragon Brown DME Stage 3
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03-03-2013, 06:11 PM	#8
Frank_NJ ///M Specialist 560 Rep 1,499 Posts Drives: E30 M3, E52 Z8, G83 M4Cx Join Date: Jun 2005 Location: NJ Shore iTrader: (0)	I get that with my X5 3.5i when in Sport mode under full load __________________ 2023 M340ix my Daily Driver G83 M4CV, F80 M3 CS, E30 M3, Z8, other various BMW's Ferrari F8
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03-04-2013, 08:17 AM	#9
mrpcar Second Lieutenant 30 Rep 207 Posts Drives: 2012 X5M Join Date: Dec 2011 Location: United States iTrader: (0) Garage List 2013 Toyota Pruis 3 [0.00] 2006 Porsche Cayenne S [0.00] 2012 BMW X5M [7.66] 2002 Ferrari 360 sp ... [0.00] 1999 Porsche 911 Ca ... [0.00] 2000 BMW 328i [0.00]	Ah! It's call the fart sound. Actually that's sounds about right. Fart sound! Thanks
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03-06-2013, 11:32 PM	#11
VCP Colonel 1390 Rep 2,336 Posts Drives: M4GTS BSM/F90comp/BSM M2CS Join Date: Mar 2011 Location: Canada iTrader: (0)	its anti lag to keep the turbos spinning
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