RX - 4th Gen (2016-2022) Discussion topics related to the 2016 and up RX350 and RX450h models

Finally! A quiet F-sport

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Old 11-16-17, 10:41 AM
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kg11
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I wonder if someone will improve the resonator to work better (reduce the resonance at 1500rpm). Switch on and off by SPORT mode selection would be even better.
Old 11-17-17, 06:38 AM
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MisterQ
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Originally Posted by elimmigran
Thnaks. Will this work with a 450H F-Sport?
The cap I purchased is for non-hybrid non-Fsport so it probably designed for the 350 only. They may have a different part for hybrid model, you can go to that website and select the 450 model and look under Air delivery to find the correct part for your 450.
Old 11-17-17, 02:20 PM
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jvinhj240
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can we just get anything just cover the hole call it a day?
Old 11-17-17, 03:26 PM
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elimmigran
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Originally Posted by jvinhj240
can we just get anything just cover the hole call it a day?
I've seen a few DIYs where they did exactly that but I'm cautious to do it.
Old 11-17-17, 06:45 PM
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mspearl95
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Originally Posted by elimmigran
Thnaks. Will this work with a 450H F-Sport?
Here's the one for the 450h-
https://www.lexuspartsdirect.ca/p/Le...78930P160.html
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Old 11-19-17, 12:53 PM
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computerwi
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Well, I have the non F-Sport and still have the annoying resonance droning.
Old 11-20-17, 03:48 AM
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JSracer
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Originally Posted by computerwi
Well, I have the non F-Sport and still have the annoying resonance droning.
not pumped into the vehicle by design like the F-sport.
Old 11-20-17, 08:41 AM
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MisterQ
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Originally Posted by jvinhj240
can we just get anything just cover the hole call it a day?
It's actually more work to do that than replacing it with the non-Fsport cap.

First of all, you have no access to the open hole on the Resonator as it points down behind the engine. You still have to loosen the clamp, take it out, then find something that fit the hole to plug in and secure it so it doesn't come off from the air pressure.
Not sure why anyone wants to go through all that effort when the appropriate replacing part is only 15 bucks that fits perfectly fine.
Old 11-21-17, 09:21 AM
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FSportWaxy
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I love the stock F sport sound....if I wanted quiet I would have bought a Prius
Old 11-21-17, 12:23 PM
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jvinhj240
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Originally Posted by MisterQ
It's actually more work to do that than replacing it with the non-Fsport cap.

First of all, you have no access to the open hole on the Resonator as it points down behind the engine. You still have to loosen the clamp, take it out, then find something that fit the hole to plug in and secure it so it doesn't come off from the air pressure.
Not sure why anyone wants to go through all that effort when the appropriate replacing part is only 15 bucks that fits perfectly fine.
I didnt know so much work, I just think of a theory to just cover and make it quieter. And I will not buy anything to cover it, I think it is quiet to me. I may I need to drive more to notice the noise.
Old 12-20-17, 02:51 AM
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mcfancy
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and for those who want to go the opposite roie and give thier non fsport the benefit if the fsport resonator sound, ive seen the reso.ator part listed on ebay. looks to be a simple swap out proces
Old 12-20-17, 02:31 PM
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My wife test-drove an FSport and said "Why is it so loud?" After 2 block she turned back and said NO - Man, I really wanted that fully loaded FSport . She then drove a normal 350 AWD and before we even left the dealer parking lot, she said "I want it". Now, I know why an FSport is louder than the normal one. Well, I save about $6000 by going with the normal non-FSport. Win for me and win for her.
Old 12-20-17, 09:42 PM
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Originally Posted by MisterQ


I purchased the cap from https://www.lexuspartsdirect.ca/
The part# is 178930P150 , it's called Air Intake Resonator w/o Fsport
https://www.lexuspartsdirect.ca/p/Le...78930P150.html

Enjoy the quiet ride!
Thank you, I am gonna grab one. Gonna see how much they ask at the dealership.
LOL, that website, the shipping costs more than the part.
Old 12-21-17, 04:39 PM
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Paid $19.30 CDN + tax at a local Toyota dealership.
Much closer than Lexus.
Gonna pick it up next week
Old 12-22-17, 06:46 PM
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i replaced mine and really cant tell the difference....have any non fsports gone on ebay and bought the resonator and aded it to see if it gave them a more aporty sou.d?


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