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Why no dual exhaust on Lexus SUVs?

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Old 03-28-11, 12:55 PM
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LexusMan77
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Default Why no dual exhaust on Lexus SUVs?

Dual exhausts have become really a common sight on cars today. Before it was seen in luxury or high performance cars, but now basically every vehicle has it; cars and SUVs. Even affordable cars are getting them. Lexus and Toyota has them on most of their cars, but why not the SUVs like the RX, LX, GX, Highlander, RAV4, 4Runner, or Sequoia? It only seems fair since just about every company is doing it on their SUVs. Examples: Mercedes ML, BMW X5, Land Rover Range Rover, Honda Pilot.
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Old 03-28-11, 01:01 PM
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IS-SV
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This has been discussed before.

Short answer, is that many Toyota/Lexus spare tire locations make the "dual outlets" more difficult to package.

Personally I prefer dual outlet exhaust setups, as seen on Edge, GL, ML, X5, GLK, Murano, MDX, Cayenne, Toureg, Explorer and very likely the new Escape/Kuga.

Although in reality it's mostly a styling cliche, manufacturers can justify by the insignificant increase in power.
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Old 03-28-11, 01:28 PM
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I am kind of over the steel exhaust back there in circular form (like they had on the 2gen RX). It was a styling fad in the 2000s, but I feel like we are moving towards bumper integrated exhausts/squarish designs. Perhaps it is packaging like IS-SV said, but that is a lame excuse if they cant find a way to engineer around that.
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Old 03-28-11, 01:35 PM
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^^ Agreed, it's more about being lazy / lame excuse when it comes to lack of dual outlets.

Good point about dual outlets being integrated into bumpers, I like the look and most paying consumers probably do too.

Unlike many styling cliches, dual exhaust outlets are functional in a very small way (very small hp and fuel efficiency gains to help justify the effort). More importantly the market wants dual outlets, myself included.
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Old 03-28-11, 01:53 PM
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I've also wondered this and think it would be a nice addition. At the same time, it's not like Lexus has a performance SUV where dual exhausts would be an important detail.

RX might look sort of funny. GX is unnecessary. Back of the LX is already odd looking.
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Old 03-28-11, 02:03 PM
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I also think that symmetrical styling in general is more appealing. I'm sure the next generation RX will have dual exhaust outlets. And if not, WALD makes a nice quad exhaust for the RX
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Old 03-28-11, 02:09 PM
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^I'd be kind of surprised if they had a change of heart and added them for the next gen. The 3RX was a 2010 model...well into the dual exhaust craze, and they decided to do without it .
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Old 03-28-11, 02:25 PM
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To be honest, i love the dual exhausts. It may sound stupid, but i almost bout an acura tl over my es300 just because it looked so much better and more symmetrical. For the lexus suv's though, it would just look out of place. I feel like its something for sportier suv's the lx and gx just don't qualify and unless they integrated it into the rx's bumper, it would look very out of place
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Old 03-28-11, 03:21 PM
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It comes down to cost and that's why there's no duals.
Dual exhaust looks great on every vehicle.
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Old 03-28-11, 03:45 PM
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good topic....ONE of the reasons I'm leaning towards a CX-9 for the wife over a Highlander is the lack of dual exhaust on the Toyota.
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Old 03-28-11, 03:58 PM
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Probably because single exhaust emit only half of the carbon monoxide compared to the dual exhaust set up. Lexus is smart.
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Old 03-28-11, 04:00 PM
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I think the next gen Lexus model line up will have three exhaust tips, as a nod to the LFA.
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Old 03-28-11, 04:31 PM
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Originally Posted by STIG
Probably because single exhaust emit only half of the carbon monoxide compared to the dual exhaust set up. Lexus is smart.
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Old 03-28-11, 04:41 PM
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Originally Posted by STIG
Probably because single exhaust emit only half of the carbon monoxide compared to the dual exhaust set up. Lexus is smart.


Then why the duals on other models?

Last edited by Joeb427; 03-28-11 at 04:49 PM.
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Old 03-28-11, 04:47 PM
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Originally Posted by STIG
Probably because single exhaust emit only half of the carbon monoxide compared to the dual exhaust set up. Lexus is smart.
Wow, don't tell the EPA or dual, triple, and quad exhausts will all be banned by the 2012 model year.
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