IS F (2008-2014) Discussion topics related to the IS F model

Faux exhaust tips development write up?

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Old 04-28-16, 05:44 AM
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isfdave86
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Default Faux exhaust tips development write up?

Is there a write up somewhere explaining why the faux tips are designed that way, and explains how they create the downforce I've read about in posts? I've been unsuccessfully consulting the google for about 45 minutes, and searched here as well.
Old 04-28-16, 06:26 AM
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Eedo123
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I would also love to read that, thanks to whoever can post it
Old 04-28-16, 08:30 AM
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Vervish
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Pretty sure there is no function to the exhaust tips. They might help aero slightly (cd) - but whatever "downforce" they may create would only help in making your bumper sag.
Old 04-28-16, 08:35 AM
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Vervish
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Found this:

During testing of the IS-F, they originally had a classic twin tip can design but at high speeds the car became
so unstable because of the turbulence that developed in that area of the car. The test drivers told the engineers
that they needed to change something to make it more stable at higher speeds. So, through testing they now
have the current configuration of quad stacked exhaust tips with diffuser panels around them and air foils under
the trunk belly. This significantly changes the air flow in that area of the car and made it much more stable at high speeds.

It was claimed to be said by Lexus during a launch event.
Old 04-28-16, 09:28 AM
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isfdave86
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Originally Posted by Vervish
Found this:

During testing of the IS-F, they originally had a classic twin tip can design but at high speeds the car became
so unstable because of the turbulence that developed in that area of the car. The test drivers told the engineers
that they needed to change something to make it more stable at higher speeds. So, through testing they now
have the current configuration of quad stacked exhaust tips with diffuser panels around them and air foils under
the trunk belly. This significantly changes the air flow in that area of the car and made it much more stable at high speeds.

It was claimed to be said by Lexus during a launch event.
Yeah that's what I found too. I was hoping there was documentation in an article about the development or something like that
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