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2009 ls460 rwd cold air intake?

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Old 05-30-21, 06:05 PM
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ThomBradie
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Default 2009 ls460 rwd cold air intake?

So has anyone found a cold air intake for the 4th Gen LS460? If so please to tell. I saw on ID injen has universal fit. I’ve searched a lot on google and on a few websites like autozone and priory’s are they only have the square/rectangle air filters and those say they boost airflow, HP, and performance I guess.




Last edited by ThomBradie; 06-01-21 at 07:27 PM.
Old 05-31-21, 07:42 AM
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Striker223
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It will do nothing but hurt your engine, the stock induction system on the 460 is extremely well optimized from the factory.
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Old 05-31-21, 07:52 AM
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ThomBradie
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Originally Posted by Striker223
It will do nothing but hurt your engine, the stock induction system on the 460 is extremely well optimized from the factory.
oh okay so then I should just stick with getting the air filters since for some reason the air filters say they increase HP performance and such.
Old 05-31-21, 08:20 AM
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Originally Posted by ThomBradie
oh okay so then I should just stick with getting the air filters since for some reason the air filters say they increase HP performance and such.
Those air filters do nothing but increase intake noise giving the illusion of more power. Any hp increase will be too little to feel.

What you will get it increased silicate, (dirt) aluminum and iron (engine) in your oil. I did a Blackstone oil analysis test on my 2UR before, during and after a K&N filter change and threw it in the garbage when I got the results back.
Old 05-31-21, 03:23 PM
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Dave144239
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Originally Posted by ThomBradie
oh okay so then I should just stick with getting the air filters since for some reason the air filters say they increase HP performance and such.
The reason they say that is so people will buy them.
Old 06-01-21, 03:17 AM
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lwphat66
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Originally Posted by ThomBradie
oh okay so then I should just stick with getting the air filters since for some reason the air filters say they increase HP performance and such.
Probably best to go with OEM replacements or equivalent and perhaps save some money, as well as save us from another debate/thread about which air filter to choose.
Old 06-01-21, 07:45 PM
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Phantom410
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You'd think a setup like the ISF would increase power? the LS460 has alot of bends and the air boxes do heatsoak sitting right above the engine.
Old 06-02-21, 03:55 AM
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lwphat66
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Originally Posted by Phantom410
You'd think a setup like the ISF would increase power? the LS460 has alot of bends and the air boxes do heatsoak sitting right above the engine.
I agree. It would be great if not too much re-engineering would be required to be able to run a set up similar to this:



Old 06-02-21, 06:16 AM
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Striker223
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It would actually be a downgrade, the 460 has the best airbox of any of the UR equipped cars/trucks. The GS 460 is a great example of how a more normal setup doesn't produce as much power as the mirrored system in the LS

The ISF/GSF/RCF have to make due with the single box setup due to packaging constraints but the engine itself is superior in those cars.

https://www.clublexus.com/forums/gs-3rd-gen-2006-2011/345059-engine-comparison-ls460-vs-gs460-w-engine-cover-off-pictures.html

There was already discussion on this

Last edited by Striker223; 06-02-21 at 06:27 AM.
Old 06-03-21, 03:43 AM
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lwphat66
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Originally Posted by Striker223
It would actually be a downgrade, the 460 has the best airbox of any of the UR equipped cars/trucks. The GS 460 is a great example of how a more normal setup doesn't produce as much power as the mirrored system in the LS

The ISF/GSF/RCF have to make due with the single box setup due to packaging constraints but the engine itself is superior in those cars.

https://www.clublexus.com/forums/gs-...-pictures.html

There was already discussion on this
That's incredible that the single intake yielded such significant decreases in horsepower and torque, 10% (38hp) & 7.6% (28lb-ft). Are there any other differences between the two platforms, like maybe exhaust systems perhaps?
Old 06-03-21, 11:58 AM
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Originally Posted by lwphat66
That's incredible that the single intake yielded such significant decreases in horsepower and torque, 10% (38hp) & 7.6% (28lb-ft). Are there any other differences between the two platforms, like maybe exhaust systems perhaps?
Yes, the GS460 has to make due with the AWD LS460 manifolds.

The LS is extremely well engineered out of the box and is difficult to improve on
Old 06-04-21, 08:14 AM
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The log tube design in the header (similar to the 4.3) in the AWD model is responsible for decrease in power. Lots of restriction in that set up. The single air box on the maybe not so much.

Last edited by VanCityLS4; 06-06-21 at 12:45 AM.
Old 06-04-21, 11:50 PM
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TreysGS460
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Originally Posted by lwphat66
That's incredible that the single intake yielded such significant decreases in horsepower and torque, 10% (38hp) & 7.6% (28lb-ft). Are there any other differences between the two platforms, like maybe exhaust systems perhaps?
Intake, headers, exhaust AND tune are different. The GS runs rich from the factory. stick with your factory intake setup.
Old 06-05-21, 04:12 AM
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lwphat66
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Originally Posted by TreysGS460
Intake, headers, exhaust AND tune are different. The GS runs rich from the factory. stick with your factory intake setup.
Yep, that was pretty much the conclusion I figured. I'm happy with my LS and how she runs and don't have any desire really to change the intake. I was only adding to the conversation because there are some that would like a CAI setup (aftermarket type or looking) and/or oil catch can as well. Personally, I don't believe the LS needs either. Been checking in on your GS build thread periodically and am looking forward to when you get the full exhaust system installed. What's the latest info on Sector 7? Did you ever get any sort of baseline dyno numbers for your GS?
Old 06-05-21, 11:05 AM
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Originally Posted by lwphat66
Been checking in on your GS build thread periodically and am looking forward to when you get the full exhaust system installed. What's the latest info on Sector 7? Did you ever get any sort of baseline dyno numbers for your GS?
Yeah I can't wait for the finished product! The last I heard S7 said they would be doing tunes for a short time, he just sold the S7 FBO GS460, and I think the tuning software was pretty expensive.

The closest I got to a baseline number was with the Invidia midpipe installed. best of those runs was 290whp/290 torque. That midpipe does delete the secondary CATS so i feel it could have gained at max 10whp. I think its safe to say a stock GS460 is around 275/280 whp which would be around 18% drivetrain loss.


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