Motordyne shockwave 2 and HFCs
Motordyne shockwave 2 and HFCs
Hey guys,
I just bolted on my new Motordyne Shockwave TDX 2. In addition to the exhaust, ive got a 5/16 spacer, fujita intake and Ichiba knock-off resonated test pipes.
anyway, the exhaust is obscenely loud. and it drones. So im going to take the test pipes out and replace them with something else. Here's a vid of car as it now is. The video does not do it justice. it has a very low tone and rumble to it, but when you put your foot down it is insanely loud. The video was recorded on a Samsung Galaxy S phone, and the phone has an anti-clipping function and it appear to have reduced the volume of the car as it goes past the camera. It makes a racket above 3000 rpm. At WOT you can hear it from miles away.
http://www.youtube.com/watch?v=R-Z32op9OnA&hd=1
So im going to have to take the test pipes out and put some cats back in. I really don't want to go back to the stock ones. I want to reduce the sound by about 20 to 30 percent. My questions are:
1. Do different HFCs produce a louder sound than others?
2. How much of a reduction can i expect with HFCs versus resonated test pipes?
I just bolted on my new Motordyne Shockwave TDX 2. In addition to the exhaust, ive got a 5/16 spacer, fujita intake and Ichiba knock-off resonated test pipes.
anyway, the exhaust is obscenely loud. and it drones. So im going to take the test pipes out and replace them with something else. Here's a vid of car as it now is. The video does not do it justice. it has a very low tone and rumble to it, but when you put your foot down it is insanely loud. The video was recorded on a Samsung Galaxy S phone, and the phone has an anti-clipping function and it appear to have reduced the volume of the car as it goes past the camera. It makes a racket above 3000 rpm. At WOT you can hear it from miles away.
http://www.youtube.com/watch?v=R-Z32op9OnA&hd=1
So im going to have to take the test pipes out and put some cats back in. I really don't want to go back to the stock ones. I want to reduce the sound by about 20 to 30 percent. My questions are:
1. Do different HFCs produce a louder sound than others?
2. How much of a reduction can i expect with HFCs versus resonated test pipes?
Hey guys,
I just bolted on my new Motordyne Shockwave TDX 2. In addition to the exhaust, ive got a 5/16 spacer, fujita intake and Ichiba knock-off resonated test pipes.
anyway, the exhaust is obscenely loud. and it drones. So im going to take the test pipes out and replace them with something else. Here's a vid of car as it now is. The video does not do it justice. it has a very low tone and rumble to it, but when you put your foot down it is insanely loud. The video was recorded on a Samsung Galaxy S phone, and the phone has an anti-clipping function and it appear to have reduced the volume of the car as it goes past the camera. It makes a racket above 3000 rpm. At WOT you can hear it from miles away.
http://www.youtube.com/watch?v=R-Z32op9OnA&hd=1
So im going to have to take the test pipes out and put some cats back in. I really don't want to go back to the stock ones. I want to reduce the sound by about 20 to 30 percent. My questions are:
1. Do different HFCs produce a louder sound than others?
2. How much of a reduction can i expect with HFCs versus resonated test pipes?
I just bolted on my new Motordyne Shockwave TDX 2. In addition to the exhaust, ive got a 5/16 spacer, fujita intake and Ichiba knock-off resonated test pipes.
anyway, the exhaust is obscenely loud. and it drones. So im going to take the test pipes out and replace them with something else. Here's a vid of car as it now is. The video does not do it justice. it has a very low tone and rumble to it, but when you put your foot down it is insanely loud. The video was recorded on a Samsung Galaxy S phone, and the phone has an anti-clipping function and it appear to have reduced the volume of the car as it goes past the camera. It makes a racket above 3000 rpm. At WOT you can hear it from miles away.
http://www.youtube.com/watch?v=R-Z32op9OnA&hd=1
So im going to have to take the test pipes out and put some cats back in. I really don't want to go back to the stock ones. I want to reduce the sound by about 20 to 30 percent. My questions are:
1. Do different HFCs produce a louder sound than others?
2. How much of a reduction can i expect with HFCs versus resonated test pipes?
1. Different HFCs may sound slightly different, but the difference is negligible. Most HFCs are designed the same way, or even utilize the same manufacturer's catalytic converter.
2. HFCs will reduce the sound, but I do not think it will be 20-30%. Maybe 20%....The cat-back section of the exhaust is really where the sound/loudness comes from.
You can spend a fortune and hours trying to get the "right sound." That said, yes, HFCs are noise attenuating. The problem is performance vs noise. If you can reduce exhaust flow you can reduce noise.
Registered User
Joined: Jan 2007
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From: Brussels belgium / GA
Have the v1 shockwave with the xyz y pipe (resonated) , along with the motordyne test pipes...still drones but im use to it.
I like it because its the only exhaust that is that loud and clear inside and out of the car.
Speed boat loud is
imo.
I like it because its the only exhaust that is that loud and clear inside and out of the car.
Speed boat loud is
imo.
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Give the mufflers some time to break in. About 2-3 weeks worth of driving. It changes the sound substantially.
One day, just for the heck of it, I changed out the midpipe muffler for a new midpipe muffler on my Z and there was a significant change in sound.
When the mufflers are manufactured and stuffed with the long strand fiberglass, the fiberglass is coated with a hair spray like varnish. This varnish keeps the fibers temporarily glued together so it doesn't make a mess during manufacturing handling.
When the muffler is put into use and the spray varnish is burned off by the hot exhaust gasses, the fibers come lose from each other and then begin to damp the sound much more effectively.
It completely changes the sound.
In fact when I put the new muffler on, it sounded kind of awkward and clearly louder. When it broke in a couple weeks later, it sounded just like the first muffler that was originally in. Deeper, mellower, quieter.
The same also happens with the axleback sidebranch mufflers too. They will get quieter too.
Also as mentioned above, you might want to try the ART pipes. They make more gains than either test pipes or HFC's, but ART pipes are also quieter than either.
ART pipes are much quieter than regular test pipes and are slightly quieter than HFC's.
.
One day, just for the heck of it, I changed out the midpipe muffler for a new midpipe muffler on my Z and there was a significant change in sound.
When the mufflers are manufactured and stuffed with the long strand fiberglass, the fiberglass is coated with a hair spray like varnish. This varnish keeps the fibers temporarily glued together so it doesn't make a mess during manufacturing handling.
When the muffler is put into use and the spray varnish is burned off by the hot exhaust gasses, the fibers come lose from each other and then begin to damp the sound much more effectively.
It completely changes the sound.
In fact when I put the new muffler on, it sounded kind of awkward and clearly louder. When it broke in a couple weeks later, it sounded just like the first muffler that was originally in. Deeper, mellower, quieter.
The same also happens with the axleback sidebranch mufflers too. They will get quieter too.
Also as mentioned above, you might want to try the ART pipes. They make more gains than either test pipes or HFC's, but ART pipes are also quieter than either.
ART pipes are much quieter than regular test pipes and are slightly quieter than HFC's.
.
Give the mufflers some time to break in. About 2-3 weeks worth of driving. It changes the sound substantially.
One day, just for the heck of it, I changed out the midpipe muffler for a new midpipe muffler on my Z and there was a significant change in sound.
When the mufflers are manufactured and stuffed with the long strand fiberglass, the fiberglass is coated with a hair spray like varnish. This varnish keeps the fibers temporarily glued together so it doesn't make a mess during manufacturing handling.
When the muffler is put into use and the spray varnish is burned off by the hot exhaust gasses, the fibers come lose from each other and then begin to damp the sound much more effectively.
It completely changes the sound.
In fact when I put the new muffler on, it sounded kind of awkward and clearly louder. When it broke in a couple weeks later, it sounded just like the first muffler that was originally in. Deeper, mellower, quieter.
The same also happens with the axleback sidebranch mufflers too. They will get quieter too.
Also as mentioned above, you might want to try the ART pipes. They make more gains than either test pipes or HFC's, but ART pipes are also quieter than either.
ART pipes are much quieter than regular test pipes and are slightly quieter than HFC's.
.
One day, just for the heck of it, I changed out the midpipe muffler for a new midpipe muffler on my Z and there was a significant change in sound.
When the mufflers are manufactured and stuffed with the long strand fiberglass, the fiberglass is coated with a hair spray like varnish. This varnish keeps the fibers temporarily glued together so it doesn't make a mess during manufacturing handling.
When the muffler is put into use and the spray varnish is burned off by the hot exhaust gasses, the fibers come lose from each other and then begin to damp the sound much more effectively.
It completely changes the sound.
In fact when I put the new muffler on, it sounded kind of awkward and clearly louder. When it broke in a couple weeks later, it sounded just like the first muffler that was originally in. Deeper, mellower, quieter.
The same also happens with the axleback sidebranch mufflers too. They will get quieter too.
Also as mentioned above, you might want to try the ART pipes. They make more gains than either test pipes or HFC's, but ART pipes are also quieter than either.
ART pipes are much quieter than regular test pipes and are slightly quieter than HFC's.
.
Give the mufflers some time to break in. About 2-3 weeks worth of driving. It changes the sound substantially.
One day, just for the heck of it, I changed out the midpipe muffler for a new midpipe muffler on my Z and there was a significant change in sound.
When the mufflers are manufactured and stuffed with the long strand fiberglass, the fiberglass is coated with a hair spray like varnish. This varnish keeps the fibers temporarily glued together so it doesn't make a mess during manufacturing handling.
When the muffler is put into use and the spray varnish is burned off by the hot exhaust gasses, the fibers come lose from each other and then begin to damp the sound much more effectively.
It completely changes the sound.
In fact when I put the new muffler on, it sounded kind of awkward and clearly louder. When it broke in a couple weeks later, it sounded just like the first muffler that was originally in. Deeper, mellower, quieter.
The same also happens with the axleback sidebranch mufflers too. They will get quieter too.
Also as mentioned above, you might want to try the ART pipes. They make more gains than either test pipes or HFC's, but ART pipes are also quieter than either.
ART pipes are much quieter than regular test pipes and are slightly quieter than HFC's.
.
One day, just for the heck of it, I changed out the midpipe muffler for a new midpipe muffler on my Z and there was a significant change in sound.
When the mufflers are manufactured and stuffed with the long strand fiberglass, the fiberglass is coated with a hair spray like varnish. This varnish keeps the fibers temporarily glued together so it doesn't make a mess during manufacturing handling.
When the muffler is put into use and the spray varnish is burned off by the hot exhaust gasses, the fibers come lose from each other and then begin to damp the sound much more effectively.
It completely changes the sound.
In fact when I put the new muffler on, it sounded kind of awkward and clearly louder. When it broke in a couple weeks later, it sounded just like the first muffler that was originally in. Deeper, mellower, quieter.
The same also happens with the axleback sidebranch mufflers too. They will get quieter too.
Also as mentioned above, you might want to try the ART pipes. They make more gains than either test pipes or HFC's, but ART pipes are also quieter than either.
ART pipes are much quieter than regular test pipes and are slightly quieter than HFC's.
.
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ndelgro
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Sep 7, 2015 04:11 PM
