Placebo: Yes or No: 330i exhaust flap: Unhooked vs connected

e90ben · 02-02-2015, 12:16 PM

So...looking for an opinion on this:

Summer 2014 I unplugged the vacuum line from my exhaust flap and enjoyed the new found sound

2 weeks ago, after getting a bit sick and tired for the sound, I plugged the line back into the exhaust valve

To my shock, the car feels like it has gained some pep- Similar to a charcoal filter delete.

Placebo? or no?

Taskmaster · 02-02-2015, 12:20 PM

Probably.

e90ben · 02-02-2015, 12:23 PM

Quote:

Originally Posted by TheAxiom

Probably.

Thinking the same thing

hassmaschine · 02-02-2015, 01:32 PM

it stays opens above ~20kph anyway, so you're just imagining it.

Three_thirty_I · 02-02-2015, 07:01 PM

I tested this by disconnecting the plug (so had stored errors from this, anyway), but the initial smile from the extra noise was soon replaced with a frown from it just being annoying, so probably only had it like this for a week or so. Can't say that I noticed any difference in performance either way.

02-02-2015, 12:16 PM	#1
e90ben Lieutenant 27 Rep 552 Posts Drives: No more Beemer Join Date: Apr 2010 Location: Vancouver, BC iTrader: (7)	Placebo: Yes or No: 330i exhaust flap: Unhooked vs connected So...looking for an opinion on this: Summer 2014 I unplugged the vacuum line from my exhaust flap and enjoyed the new found sound 2 weeks ago, after getting a bit sick and tired for the sound, I plugged the line back into the exhaust valve To my shock, the car feels like it has gained some pep- Similar to a charcoal filter delete. Placebo? or no?
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02-02-2015, 12:20 PM	#2
Taskmaster Banned 2465 Rep 9,004 Posts Drives: M235i 6MT / E92 328 Msport 6MT Join Date: Nov 2013 Location: Florida iTrader: (6)	Probably.
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02-02-2015, 01:32 PM	#4
hassmaschine Major General 3973 Rep 7,215 Posts Drives: "NBO" 330i Join Date: Jun 2014 Location: earth iTrader: (0)	it stays opens above ~20kph anyway, so you're just imagining it.
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02-02-2015, 07:01 PM	#5
Three_thirty_I Lieutenant Colonel 200 Rep 1,834 Posts Drives: '05 E90 330i Manual Join Date: Aug 2010 Location: Cape Town, South Africa iTrader: (0) Garage List 2005 BMW E90 330i [0.00]	I tested this by disconnecting the plug (so had stored errors from this, anyway), but the initial smile from the extra noise was soon replaced with a frown from it just being annoying, so probably only had it like this for a week or so. Can't say that I noticed any difference in performance either way. __________________ BMW E90 330i (M) '05 (His) \| (Hers) BMW E46 320i f/l (M) '03
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