Need help getting exhaust to sound like stock...
10-13-2009, 06:55 AM
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Are there any temporarily or cheap solutions to basically mute the exhaust noise of my car. Don't care about performance.
I need to pass an exhaust noise inspection, which basically states 90 Decibels at 4425 rpm.
Say for references sake, I have straight pipe on the car, no mufflers at all. What would be the easiest solution? I have dual exhausts, and thus
going back to stock also isn't an option. Please help me out guys!
I need to pass an exhaust noise inspection, which basically states 90 Decibels at 4425 rpm.
Say for references sake, I have straight pipe on the car, no mufflers at all. What would be the easiest solution? I have dual exhausts, and thus
going back to stock also isn't an option. Please help me out guys!
10-13-2009, 07:22 AM
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Originally Posted by yezero' post='1031273' date='Oct 13 2009, 10:55 AM
Are there any temporarily or cheap solutions to basically mute the exhaust noise of my car. Don't care about performance.
I need to pass an exhaust noise inspection, which basically states 90 Decibels at 4425 rpm.
Say for references sake, I have straight pipe on the car, no mufflers at all. What would be the easiest solution? I have dual exhausts, and thus
going back to stock also isn't an option. Please help me out guys!
I need to pass an exhaust noise inspection, which basically states 90 Decibels at 4425 rpm.
Say for references sake, I have straight pipe on the car, no mufflers at all. What would be the easiest solution? I have dual exhausts, and thus
going back to stock also isn't an option. Please help me out guys!
10-13-2009, 08:23 AM
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My Ride: 2008 550i Jet Black on Black Leather, SAT with Paddles, Logic 7, Comfort Seats, NAV, Sport Package, PDC, Xenons, Sirius, Trinity 12W LED Angel Eyes, RPi GT Exhaust, M rear spoiler, ACS Roof Spoiler, Tinted Tail Lights, Bimmian Carbon Fiber Pillar Trim, Bimmian Shadow 550i emblem, RPi Scoop, E60 Forum Cling, Mtec bulbs in fog lights, Mtec 2W LED for License Plate Light Bulbs, K&N Filter, Bimmian LED Smoked Side Markers, Blackout roundels, Carbon Fiber Kidney Grills.
Retired Rides - 1989 325i convertible, 1995 M3, 2002 X5, 2005 545i, 2008 X5 (Lemon)
Originally Posted by Krozi' post='1031304' date='Oct 13 2009, 08:22 AM
Straight pipes are gonna be rather difficult to silence....
10-13-2009, 08:56 AM
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My Ride: Completely standard (but well specced) 530d 2006
Exhaust bungs. Disc (like a polo???) shaped items with a smaller internal dia hole that significantly reduced noise (and performance).
I used to own a Subaru, several of the guys had very big exhausts which they simply bunged when it was test time. Check out some of the Scooby suppliers as their bungs might fit your exhaust.
I used to own a Subaru, several of the guys had very big exhausts which they simply bunged when it was test time. Check out some of the Scooby suppliers as their bungs might fit your exhaust.
10-13-2009, 09:41 AM
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My Ride: 2008 550i Jet Black on Black Leather, SAT with Paddles, Logic 7, Comfort Seats, NAV, Sport Package, PDC, Xenons, Sirius, Trinity 12W LED Angel Eyes, RPi GT Exhaust, M rear spoiler, ACS Roof Spoiler, Tinted Tail Lights, Bimmian Carbon Fiber Pillar Trim, Bimmian Shadow 550i emblem, RPi Scoop, E60 Forum Cling, Mtec bulbs in fog lights, Mtec 2W LED for License Plate Light Bulbs, K&N Filter, Bimmian LED Smoked Side Markers, Blackout roundels, Carbon Fiber Kidney Grills.
Retired Rides - 1989 325i convertible, 1995 M3, 2002 X5, 2005 545i, 2008 X5 (Lemon)
Originally Posted by Dan's BMW' post='1031387' date='Oct 13 2009, 09:56 AM
Exhaust bungs. Disc (like a polo???) shaped items with a smaller internal dia hole that significantly reduced noise (and performance).
I used to own a Subaru, several of the guys had very big exhausts which they simply bunged when it was test time. Check out some of the Scooby suppliers as their bungs might fit your exhaust.
I used to own a Subaru, several of the guys had very big exhausts which they simply bunged when it was test time. Check out some of the Scooby suppliers as their bungs might fit your exhaust.
10-13-2009, 11:33 AM
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Originally Posted by flyingpuck' post='1031418' date='Oct 13 2009, 01:41 PM
10-13-2009, 12:09 PM
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Originally Posted by flyingpuck' post='1031418' date='Oct 13 2009, 01:41 PM
Old technique to silence noisy pipes ... some (NOT A LOT) steel wool shoved into rearmost resonator pipe. It'll be a bitch to fish it out if you shove it in too far but and will reduce performance while in the exhaust but it will quiet things down.
10-13-2009, 12:12 PM
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Originally Posted by Krozi' post='1031304' date='Oct 13 2009, 08:22 AM
Straight pipes are gonna be rather difficult to silence....
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