GS - 4th Gen (2013-2020) Discussion about the 2013 and up GS models

What did you do to your GS today?

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Old 09-05-19, 01:05 PM
  #2596  
Nahpun350
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Originally Posted by RichardB23
Has anyone taken the sound generator off long term with any negative side effects?
I bought a K&N typhoon off of DallasDave, specifically to ditch the sound generator. No ill effects at all. Sounds a whole lot better in my opinion as it doesn't sound artificial when I accelerate. As far as taking it off the oem intake, I have no idea, but you will probably want to plug it somehow instead of leaving an open hole.
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Old 09-05-19, 01:23 PM
  #2597  
JDR76
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Should be no issues to take off the sound generator. It's just a baffle that sits off the intake with a sole purpose of making noise. Lexus uses this same engine on the RX350 (and elsewhere) with and without the sound generator. On the RX350 it's added on with the F Sport package.
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Old 09-05-19, 01:29 PM
  #2598  
signdetres
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Does anyone know if the intake is able to draw in hotter air from the engine bay through the sound generator opening? Can’t help but wonder if less hot air gets sucked in when the sound generator hole is capped off
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Old 09-05-19, 07:34 PM
  #2599  
chinee
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Originally Posted by signdetres
Does anyone know if the intake is able to draw in hotter air from the engine bay through the sound generator opening? Can’t help but wonder if less hot air gets sucked in when the sound generator hole is capped off
I always thought it was a sealed component that "amplified" the sound of the exhaust, with no air passing through it.

Pause: Just ran into the garage and blew into one end... it is a sealed unit. Reaching in you can feel the diaphragm, and where it is sealed to the sides. It's all about sound waves, not air movement (I guess).
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Old 09-06-19, 09:20 PM
  #2600  
silver4gs
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Originally Posted by soulless
accelera phi tires.... did you get your car from lexus of glendale? lol.. they seem to put those on all their used cars (including mine).
Haha yeah, I drove about 5k miles or so before I had to replace them. Prob could've lasted another oil change, but they were getting noisier by the day even tho I don't drive the car everyday
Old 09-10-19, 06:47 AM
  #2601  
JDR76
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I took the intake sound generator off last night. I'll spend a few days evaluating as all I've driven since is my 6 mile drive into work this morning.

My quick impression is that it's not as noticeable a difference as I had expected, and I don't notice any changes with respect to vibration, but I think it's good. Another few days and I'll have more of an opinion on it.
Old 09-10-19, 07:15 AM
  #2602  
realjimmyb
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Originally Posted by krumsta
Lowered it on tanabes and installed a rear roof spoiler and lower lip. Roof spoiler paint to match
Lip painted to match the wheels.
What front lip spoiler is this?
Old 09-10-19, 11:09 AM
  #2603  
Nahpun350
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Originally Posted by JDR76
I took the intake sound generator off last night. I'll spend a few days evaluating as all I've driven since is my 6 mile drive into work this morning.

My quick impression is that it's not as noticeable a difference as I had expected, and I don't notice any changes with respect to vibration, but I think it's good. Another few days and I'll have more of an opinion on it.
Did you have to plug it at all?
Old 09-10-19, 11:15 AM
  #2604  
JDR76
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Originally Posted by Nahpun350
Did you have to plug it at all?
Yes, I used this:

Originally Posted by signdetres
Oops. You should definitely try it out. It's a super quick & easy swap and is pretty low risk @ ~$10. I used the RX part to cap it off https://www.lexuspartsnow.com/parts/...893-0p150.html
Old 09-10-19, 11:21 AM
  #2605  
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Originally Posted by JDR76
Yes, I used this:
Interesting. With my K&N Typhoon, it sounds much better. It's quieter and sounds great during acceleration (not artificial sounding). I'm also just using the OEM paper filter. Guess that RX resonator is still affecting the sound, but not as much?
Old 09-10-19, 11:22 AM
  #2606  
JDR76
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I just need more seat time and places where I can open it up a bit more, reaching those upper RPMs.
Old 09-10-19, 11:27 AM
  #2607  
Nahpun350
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Originally Posted by JDR76
I just need more seat time and places where I can open it up a bit more, reaching those upper RPMs.
You could just rev the engine...as soon as I swapped my intake tube, I just revved a few times. The difference was immediate.
Old 09-10-19, 11:37 AM
  #2608  
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Originally Posted by Nahpun350
You could just rev the engine...as soon as I swapped my intake tube, I just revved a few times. The difference was immediate.
Yeah, I did that and it was noticeable, but I didn't feel that it gave me a good basis for comparison. I want to spend some time with it in real world conditions to gauge the impact when you also factor in normal driving, road/tire noise, wind noise, etc.
Old 09-12-19, 04:01 PM
  #2609  
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Lowered it on RSR superdown springs.
Old 09-15-19, 01:20 PM
  #2610  
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Hit it with some 303 inside and under the hood. Cleaned the windshield and interior glass surfaces, been about 6 months so it's been overdue. Used a diluted IPA solution to remove the oils and film, and Invisible Glass to shine. First time trying the IPA and Invisible Glass... fingers are crossed.




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