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oldcorollas
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Re: Exhaust Myth... Fact or Fiction?

Thu, 10 February 2005 07:45

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Quote:

Handling the exhaust chores is a 4-into-1 system controlled by Yamaha's Exhaust Ultimate Powervalve (EXUP) that precisely matches the exhaust backpressure with engine RPM to create maximum power.

http://www.centurionyamaha.co.za/ssfz1.htm

Quote:

EXUP system
The engine is equipped with Yamaha’s patented EXUP system to further increase the torque. EXUP is a system that operates a valve in the exhaust collector in relation to the engine rpm-range. For optimal exhaust efficiency you need a wider exhaust diameter at higher rpm as compared to lower rpm and that is exactly what the EXUP system does: it reduces the diameter at lower rpm

Variable air intake system
A similar optimization as the EXUP is used on the intake side, where a valve system regulates the air intake diameter of the airbox just before the air filter. This keeps the airflow and air intake speed always at an optimum level, for the best throttle response

http://ymedc.introweb.nl/en/archive/street/mt01_04 sep.asp#b1

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Subject Poster Date

Read Message Exhaust Myth... Fact or Fiction? Matt-itude Wed, 09 February 2005 08:13
Re: Exhaust Myth... Fact or Fiction? Kyosho Wed, 09 February 2005 08:24
Re: Exhaust Myth... Fact or Fiction? Matt-itude Wed, 09 February 2005 08:29
Re: Exhaust Myth... Fact or Fiction? Fr3aK Wed, 09 February 2005 09:11
Read Message Re: Exhaust Myth... Fact or Fiction? oldcorollas Wed, 09 February 2005 09:36
Re: Exhaust Myth... Fact or Fiction? Kyosho Wed, 09 February 2005 09:34
Re: Exhaust Myth... Fact or Fiction? oldcorollas Wed, 09 February 2005 08:47
Re: Exhaust Myth... Fact or Fiction? Matt-itude Wed, 09 February 2005 08:51
Read Message Re: Exhaust Myth... Fact or Fiction? oldcorollas Wed, 09 February 2005 08:57
Re: Exhaust Myth... Fact or Fiction? towe_001 Fri, 11 March 2005 12:23
Re: Exhaust Myth... Fact or Fiction? draven Wed, 09 February 2005 08:37
Re: Exhaust Myth... Fact or Fiction? Matt-itude Wed, 09 February 2005 08:43
Read Message Re: Exhaust Myth... Fact or Fiction? oldcorollas Wed, 09 February 2005 08:49
Re: Exhaust Myth... Fact or Fiction? Farkurnell Wed, 09 February 2005 09:30
Re: Exhaust Myth... Fact or Fiction? Kyosho Wed, 09 February 2005 09:36
Re: Exhaust Myth... Fact or Fiction? oldcorollas Wed, 09 February 2005 09:40
Read Message Re: Exhaust Myth... Fact or Fiction? selk Mon, 14 March 2005 08:39
Re: Exhaust Myth... Fact or Fiction? R-jay Mon, 14 March 2005 19:49
Re: Exhaust Myth... Fact or Fiction? ke30king Wed, 16 March 2005 12:25
Re: Exhaust Myth... Fact or Fiction? Farkurnell Wed, 09 February 2005 09:45
Read Message Re: Exhaust Myth... Fact or Fiction? draven Wed, 09 February 2005 09:47
Re: Exhaust Myth... Fact or Fiction? justcallmefrank Wed, 09 February 2005 10:12
Re: Exhaust Myth... Fact or Fiction? MR 1JZ Thu, 10 February 2005 00:58
Re: Exhaust Myth... Fact or Fiction? chrisss Wed, 09 February 2005 09:49
Read Message Re: Exhaust Myth... Fact or Fiction? rokusan Wed, 09 February 2005 10:26
Re: Exhaust Myth... Fact or Fiction? Bugman Wed, 09 February 2005 22:28
Re: Exhaust Myth... Fact or Fiction? willwal98 Wed, 09 February 2005 22:30
Re: Exhaust Myth... Fact or Fiction? Bugman Wed, 09 February 2005 22:41
Read Message Re: Exhaust Myth... Fact or Fiction? Mr Revhead Wed, 09 February 2005 23:55
Re: Exhaust Myth... Fact or Fiction? OPPY Thu, 10 February 2005 02:16
Re: Exhaust Myth... Fact or Fiction? oldcorollas Thu, 10 February 2005 05:22
Re: Exhaust Myth... Fact or Fiction? oldcorollas Thu, 10 February 2005 05:25
Read Message Re: Exhaust Myth... Fact or Fiction? greenta22 Thu, 10 February 2005 02:32
Re: Exhaust Myth... Fact or Fiction? buck naked Thu, 10 February 2005 03:47
Re: Exhaust Myth... Fact or Fiction? Sam_Q Thu, 10 February 2005 07:22
Re: Exhaust Myth... Fact or Fiction? oldcorollas Thu, 10 February 2005 07:45
Read Message Re: Exhaust Myth... Fact or Fiction? oldcorollas Thu, 10 February 2005 07:57
Re: Exhaust Myth... Fact or Fiction? Sam_Q Thu, 10 February 2005 07:53
Re: Exhaust Myth... Fact or Fiction? oldcorollas Thu, 10 February 2005 07:59
Re: Exhaust Myth... Fact or Fiction? YelloRolla Thu, 10 February 2005 08:06
Read Message Re: Exhaust Myth... Fact or Fiction? Mr Revhead Thu, 10 February 2005 09:54
Re: Exhaust Myth... Fact or Fiction? Big T Thu, 10 February 2005 10:57
Re: Exhaust Myth... Fact or Fiction? jkvsnn Thu, 10 February 2005 11:57
Re: Exhaust Myth... Fact or Fiction? oldcorollas Fri, 11 February 2005 05:24
Read Message Re: Exhaust Myth... Fact or Fiction? jkvsnn Wed, 16 February 2005 22:58
Re: Exhaust Myth... Fact or Fiction? oldcorollas Thu, 10 March 2005 08:25
Re: Exhaust Myth... Fact or Fiction? indigoid Thu, 10 March 2005 09:22
Re: Exhaust Myth... Fact or Fiction? greenta22 Thu, 10 March 2005 23:07
Read Message Re: Exhaust Myth... Fact or Fiction? oldcorollas Fri, 11 March 2005 00:34
Re: Exhaust Myth... Fact or Fiction? Hunty Thu, 10 February 2005 12:09
Re: Exhaust Myth... Fact or Fiction? Byatch Sat, 12 February 2005 05:57
Re: Exhaust Myth... Fact or Fiction? 3S-GE_Man Sat, 12 February 2005 06:52
Read Message Re: Exhaust Myth... Fact or Fiction? EMD-AE86 Sat, 12 February 2005 08:25
Re: Exhaust Myth... Fact or Fiction? RWDboy Sat, 12 February 2005 13:25
Re: Exhaust Myth... Fact or Fiction? Dunno Sun, 13 February 2005 13:08
Re: Exhaust Myth... Fact or Fiction? Hunty Thu, 17 February 2005 02:01
Read Message Re: Exhaust Myth... Fact or Fiction? jkvsnn Thu, 17 February 2005 02:13
Re: Exhaust Myth... Fact or Fiction? 79Rona Fri, 11 March 2005 00:57
Re: Exhaust Myth... Fact or Fiction? mick Fri, 11 March 2005 10:10
Re: Exhaust Myth... Fact or Fiction? Toobs Sat, 12 March 2005 14:54
Read Message Re: Exhaust Myth... Fact or Fiction? river Sat, 12 March 2005 23:33
Re: Exhaust Myth... Fact or Fiction? towe_001 Mon, 14 March 2005 01:36
Re: Exhaust Myth... Fact or Fiction? notorius Mon, 14 March 2005 04:41
Re: Exhaust Myth... Fact or Fiction? 73ke25 Tue, 15 March 2005 11:04
Read Message Re: Exhaust Myth... Fact or Fiction? hemi twofifteen turbo Tue, 15 March 2005 12:13
Re: Exhaust Myth... Fact or Fiction? Norbie Tue, 15 March 2005 12:42
Re: Exhaust Myth... Fact or Fiction? 73ke25 Wed, 16 March 2005 12:30
Re: Exhaust Myth... Fact or Fiction? Norbie Wed, 16 March 2005 13:37
Read Message Re: Exhaust Myth... Fact or Fiction? greenta22 Mon, 14 March 2005 07:33
Re: Exhaust Myth... Fact or Fiction? notorius Mon, 14 March 2005 08:33
Re: Exhaust Myth... Fact or Fiction? Allan Tue, 15 March 2005 13:01
Re: Exhaust Myth... Fact or Fiction? 510rob Tue, 15 March 2005 17:32
Read Message Re: Exhaust Myth... Fact or Fiction? R-jay Tue, 15 March 2005 22:58
Re: Exhaust Myth... Fact or Fiction? 510rob Tue, 15 March 2005 23:00
Re: Exhaust Myth... Fact or Fiction? jeffro RA28 Wed, 16 March 2005 09:24
Re: Exhaust Myth... Fact or Fiction? YelloRolla Wed, 16 March 2005 09:59
Read Message Re: Exhaust Myth... Fact or Fiction? oldcorollas Wed, 16 March 2005 11:17
Re: Exhaust Myth... Fact or Fiction? jeffro RA28 Thu, 17 March 2005 09:10
Re: Exhaust Myth... Fact or Fiction? jeffro RA28 Wed, 16 March 2005 10:45
Re: Exhaust Myth... Fact or Fiction? ke30king Wed, 16 March 2005 12:57
Read Message Re: Exhaust Myth... Fact or Fiction? ViPeR_NiPPleX Wed, 16 March 2005 13:41
Re: Exhaust Myth... Fact or Fiction? tom210 Wed, 30 March 2005 14:13

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