thoughts on sprint booster for N55? terrible throttle response.

tizzyd · 11-21-2012, 06:34 AM

Hey guys,

Ever since Feb. of last year after the newest software was updated my car has had terrible throttle response. We are talking I have to push the pedal down roughly 10-15% before anything happens. The car has been looked at by BMW countless times, including by a field service engineer, but to no avail. BMW even gave me the PPK for free, but it still did nothing to solve the problem. I absolutely love everything else about my car, but it is starting to spoil what has been an amazing ownership experience. So, my friend mentioned the idea of a sprint booster which is supposed to help throttle response...do any of you know if it will actually make a difference or whether it's just a waste of money?

N8N · 11-21-2012, 08:07 AM

Dumb question but has anyone checked the pot in the gas pedal assy? 10 minutes with a multimeter (i'd use an analog one for this and watch for a nice smooth sweep) might tell you more than taking it back to dealer.

mxchris727 · 11-21-2012, 08:30 AM

They need to reset the throttle adaptation value after updating the DME.

tizzyd · 11-21-2012, 09:59 AM

Quote:

Originally Posted by mxchris727

They need to reset the throttle adaptation value after updating the DME.

Already done, didn't make a difference either

tizzyd · 12-26-2012, 08:49 AM

bump?

mashimarho · 03-10-2014, 11:03 AM

Bump.
I've been looking into getting one for many years. I've been spoiled by my daily which is entirely mechanical and response if instantanious.
Should be able to tap the pedal and raise the RPMs.

DesertBMW · 03-10-2014, 02:18 PM

Reason why N55 is not that responsive to the throttle is because of the valvetronic system and the turbo system. It is normal for it to be laggy. I had valvetronic sensor fail on my engine and computer defaulted to all valves being adjusted for maximum lift and engine controlled by the throttle butterfly, this instantly gave me instant throttle response.

11-21-2012, 06:34 AM	#1
tizzyd Captain 238 Rep 610 Posts Drives: 2011 335i 6MT Join Date: Feb 2008 Location: USA iTrader: (0) Garage List 2003.5 BMW M3 [0.00] 2011 335i Coupe [8.50]	thoughts on sprint booster for N55? terrible throttle response. Hey guys, Ever since Feb. of last year after the newest software was updated my car has had terrible throttle response. We are talking I have to push the pedal down roughly 10-15% before anything happens. The car has been looked at by BMW countless times, including by a field service engineer, but to no avail. BMW even gave me the PPK for free, but it still did nothing to solve the problem. I absolutely love everything else about my car, but it is starting to spoil what has been an amazing ownership experience. So, my friend mentioned the idea of a sprint booster which is supposed to help throttle response...do any of you know if it will actually make a difference or whether it's just a waste of money? __________________ 2007 E60 M5 6MT (Interlagos/Silverstone Full) \| 2013 F10 M5 6MT (Imola Red/Black Full) \| 2022 BMW M5 CS (Brands Hatch Grey) \| 2006 E46 M3 Comp 6MT (Silver Grey/Black, CSL clone) \| 2011.5 E92 M3 (Fire Orange/Black Recaros, 4.6L Stroker, GTS Clone) \| 2011 1M (Valencia Orange/Black)
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11-21-2012, 08:07 AM	#2
N8N Lieutenant Colonel 168 Rep 1,843 Posts Drives: 2009 E92 335i 6MT Join Date: Sep 2012 Location: Berwyn Heights, MD iTrader: (2)	Dumb question but has anyone checked the pot in the gas pedal assy? 10 minutes with a multimeter (i'd use an analog one for this and watch for a nice smooth sweep) might tell you more than taking it back to dealer.
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11-21-2012, 08:30 AM	#3
mxchris727 Captain 193 Rep 666 Posts Drives: '03 M5, '06 325i, '12 M3 Join Date: Aug 2012 Location: Westport, CT iTrader: (0)	They need to reset the throttle adaptation value after updating the DME. __________________ BMW GT1 (INPA, DIS, WinKFP, ect..), ISTA/P & /D is up and running! PM me if you want to stop by and code your car.
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12-26-2012, 08:49 AM	#5
tizzyd Captain 238 Rep 610 Posts Drives: 2011 335i 6MT Join Date: Feb 2008 Location: USA iTrader: (0) Garage List 2003.5 BMW M3 [0.00] 2011 335i Coupe [8.50]	bump? __________________ 2007 E60 M5 6MT (Interlagos/Silverstone Full) \| 2013 F10 M5 6MT (Imola Red/Black Full) \| 2022 BMW M5 CS (Brands Hatch Grey) \| 2006 E46 M3 Comp 6MT (Silver Grey/Black, CSL clone) \| 2011.5 E92 M3 (Fire Orange/Black Recaros, 4.6L Stroker, GTS Clone) \| 2011 1M (Valencia Orange/Black)
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03-10-2014, 11:03 AM	#6
mashimarho BimmerPost Supporting Vendor 2106 Rep 13,876 Posts Drives: E92 M3 & F80 M3 & G82 M4 Join Date: Mar 2010 Location: Lynnwood, WA iTrader: (45) Garage List 2021 BMW G82 M4 [0.00] 2011 BMW E92 M3 [0.00] 2015 BMW F80 M3 [0.00] 2012 BMW 335i xDrive [9.78]	Bump. I've been looking into getting one for many years. I've been spoiled by my daily which is entirely mechanical and response if instantanious. Should be able to tap the pedal and raise the RPMs. __________________ Mashimarho.com /// Instagram /// Facebook /// Youtube /// sales@mashimarho.com /// (425) 582-7939
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03-10-2014, 02:18 PM	#7
DesertBMW Banned 15 Rep 75 Posts Drives: 1996 328i with N55 engine Join Date: Aug 2013 Location: Phoenix AZ USA iTrader: (0)	Reason why N55 is not that responsive to the throttle is because of the valvetronic system and the turbo system. It is normal for it to be laggy. I had valvetronic sensor fail on my engine and computer defaulted to all valves being adjusted for maximum lift and engine controlled by the throttle butterfly, this instantly gave me instant throttle response.
	Appreciate 0 Quote