http://videos.streetfire.net/category/L ... e05df3.htm
go figure............
Tom
exhaust mod
Moderators: jifflemon, coyote1980, Rachel
exhaust mod
My Volvo 480 Type: ES Year: 1994 Colour: Flame Red Engine: 2.0
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robin_xr4i
- 480 Expert
- Posts: 629
- Joined: Mon Sep 05, 2005 12:21 pm
- Location: Torbay
Mmmm 
not to sure about this it seem like a bit of a farse, but its the same technology used on new Astons!
But i guess the science is right you want a more restrictive exhaust at low revs for better idle, low torque and on a turbo car enough back pressure to keep the oil seal tight....
....and at high revs a less restrictive exhaust at high revs, more power and better fuel economy.
not to sure about this it seem like a bit of a farse, but its the same technology used on new Astons!But i guess the science is right you want a more restrictive exhaust at low revs for better idle, low torque and on a turbo car enough back pressure to keep the oil seal tight....
....and at high revs a less restrictive exhaust at high revs, more power and better fuel economy.
[img]http://i15.photobucket.com/albums/a376/robin_xr4i/newsign.jpg[/img]
My old Volvo 480 // Type: Turbo // Year: 1992 // Colour: 305 - Black Metallic // Engine: B18FT // Mods: Rich Mod, Recirculating Piston Dump Valve, Pi Lowering Springs, Induction Kit
My old Volvo 480 // Type: Turbo // Year: 1992 // Colour: 305 - Black Metallic // Engine: B18FT // Mods: Rich Mod, Recirculating Piston Dump Valve, Pi Lowering Springs, Induction Kit
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levin
- Knows an Aerodeck isn't a 480
- Posts: 232
- Joined: Mon Sep 20, 2004 3:51 am
- Location: Lisbon, Portugal
In the vid you only see the b-pipe where the valve goes and how it works.volviz wrote:WTF?? it sort of shortens exhaust?
When they film outside the car, they put back the rest of the b-pipe and muffler.
BTW, these kinds of systems already existed for motorbikes.
Cheers m8
[img]http://jdmtech.net/levin/imagens/assinatura.jpg[/img]
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My Volvo 480
[b]Name[/b]: Volverine // [b]Type[/b]: TURBO // [b]Year[/b]: 1989 // [b]Colour[/b]: Black Metallic // [b]Engine[/b]: B18FT (1.7), Manual // [b]Mods[/b]: Pollux Black Metallic; Voodoo III MBC[/size]
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My Volvo 480
[b]Name[/b]: Volverine // [b]Type[/b]: TURBO // [b]Year[/b]: 1989 // [b]Colour[/b]: Black Metallic // [b]Engine[/b]: B18FT (1.7), Manual // [b]Mods[/b]: Pollux Black Metallic; Voodoo III MBC[/size]