E60 Muffler Flap Open Mod
07-18-2015, 06:48 AM
#41
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My Ride: 2012 BMW 550i Sedan, Convenience Package, M Sport Package, Premium Sound Package, STEPTRONIC automatic transmission, Heated front seats. DINAN D903-44T52 Stage 2 Performance Engine Software 501 HP / 580 TRQ
07-18-2015, 07:19 AM
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My Ride: 535i xdrive, white, premium
Good idea. I was under the impression they just came off with some force.
03-05-2017, 08:08 AM
#43
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I looked up this thread to remember the details. I did it with my E60 and enjoyed it. Not loud but just a little more exhaust sound especially when decelerating. Hard to say how much difference on accelerating.
I'm getting ready to do it to my F10. That's how much I liked it
I'm getting ready to do it to my F10. That's how much I liked it
01-02-2023, 11:07 PM
#44
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My Ride: E61 545i
Model Year: 2005
Engine: N62B44
A little bit old thread, but i've done this "mod" yesterday in my E61 545i, mainly cuz the flap was always closed (i suspect electrical controler is not working).
The sound is bit more deeper at idle, i didn't notice any change in performance at WOT, or in midrange - but still wondering is the torque doesen't drop if there is no flap closed until 3k rpm.
Anybody do dyno test maybe or racelogic accelerations after open flap all the time.
The sound is bit more deeper at idle, i didn't notice any change in performance at WOT, or in midrange - but still wondering is the torque doesen't drop if there is no flap closed until 3k rpm.
Anybody do dyno test maybe or racelogic accelerations after open flap all the time.
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