E90 N55 PPK Exhaust Flap Question

pocoyo_3 · 09-29-2013, 10:55 PM

I have an E90 N55 with the Performance Pack 1. Part of the PPK is to keep the exhaust flap open at all times. Is anyone aware of how BMW does this? Is it a software i.e. coding?

gibumee · 09-30-2013, 04:00 AM

Quote:

Originally Posted by my325i

I have an E90 N55 with the Performance Pack 1. Part of the PPK is to keep the exhaust flap open at all times. Is anyone aware of how BMW does this? Is it a software i.e. coding?

I'm pretty sure it doesn't keep it open all the time. I say this only because when I golf teed the vacuum hose exhaust got louder especially at low end RPMs.

CombatNinja · 09-30-2013, 06:08 AM

It doesn't keep the valve open at all times.

Bobby_Sardells · 10-03-2013, 10:11 AM

the valve actuation can be disabled by
1) golf-tee mod (behind the left rear trunk panel, simply unplug)
2) and trivially the PPK2 (cat back exhaust)

pocoyo_3 · 12-11-2013, 07:52 PM

Does anyone have a definitive answer to this, such as a video?

Sunny D · 12-13-2013, 10:59 PM

Quote:

Originally Posted by my325i

Does anyone have a definitive answer to this, such as a video?

Everyone above is correct. When I start my car there is nothing coming out of the left exhaust... unless I unplug the flap

melloww22 · 12-14-2013, 01:40 AM

Quote:

Originally Posted by my325i

Does anyone have a definitive answer to this, such as a video?

Quote:

Originally Posted by ry335

Everyone above is correct. When I start my car there is nothing coming out of the left exhaust... unless I unplug the flap

with PPK at startup once idle comes down to 600 RPM then it opens up... disconnecting the cable prevents the flap from closing..

rgee27 · 07-03-2014, 03:33 PM

Hmm...?? When I cold start my N55 with the PPK , both exhaust pipes are active and open.... Cold starts are much louder and exhaust note is louder when driving at all rpm 's

09-29-2013, 10:55 PM	#1
pocoyo_3 First Lieutenant 54 Rep 352 Posts Drives: 2006 330i / 6MT Join Date: Apr 2010 Location: San Diego iTrader: (0)	E90 N55 PPK Exhaust Flap Question I have an E90 N55 with the Performance Pack 1. Part of the PPK is to keep the exhaust flap open at all times. Is anyone aware of how BMW does this? Is it a software i.e. coding? __________________ 1999 E46 323i / Jet Black / Black Leather / 6MT / Sports Package / Heated Seats 2006 E90 325i / Jet Black / Black Leatherette / 6MT / Sports Package / Cold Weather 2011 E90 335i / Slate Grey / Black Leatherette / 6MT / M-Sport Package / Heated Seats 2014 F30 328i / Alpine White / Black Sensatec / 8AT (2TB) / ZMM / 494 / 609 / ZDA / ZLP 2015 F22 M235i / Alpine White / 6MT / ZTP / ZPP / ZDA / 494 / ZDM
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09-30-2013, 06:08 AM	#3
CombatNinja Banned 51 Rep 1,556 Posts Drives: e91 328i, e90 328i, e90 335i Join Date: Feb 2011 Location: United States iTrader: (0)	It doesn't keep the valve open at all times.
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10-03-2013, 10:11 AM	#4
Bobby_Sardells First Lieutenant 12 Rep 371 Posts Drives: 2017 BMW M3 30 Jahre Join Date: Aug 2011 Location: Toronto, Ontario iTrader: (0) Garage List 2017 BMW M3 30 Jahre [0.00] 2011 BMW 335i xDriv ... [10.00]	the valve actuation can be disabled by 1) golf-tee mod (behind the left rear trunk panel, simply unplug) 2) and trivially the PPK2 (cat back exhaust)
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12-11-2013, 07:52 PM	#5
pocoyo_3 First Lieutenant 54 Rep 352 Posts Drives: 2006 330i / 6MT Join Date: Apr 2010 Location: San Diego iTrader: (0)	Does anyone have a definitive answer to this, such as a video?
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07-03-2014, 03:33 PM	#8
rgee27 Enlisted Member 2 Rep 30 Posts Drives: 2011 335i Join Date: Apr 2014 Location: California iTrader: (0)	Hmm...?? When I cold start my N55 with the PPK , both exhaust pipes are active and open.... Cold starts are much louder and exhaust note is louder when driving at all rpm 's
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