Finally got this done.

Upcoming project
Sound deadening this Spring 2017,
Llamar Protective Clear Film for Sound barrier Summer 2017

 

Install New Wheel F Sport 18 inch
New Tire Michellin Smooth Quite Soft Ride Replacing Bridgestore D/H Dueller same Size 265/60/18
3 Muffler Damper ( I can't stand muffler drone at speed over 65mph)
Transmission Oil Change with Amsoil Signature Series...Smooth driving No more Jerking after slowing down and sudden acceleration (31K miles) 51/2 quart
Replace Transmission Filter

Update: Muffler Damper Welded

 

I really like those wheels a lot...

 

Nice wheels you mine me asking how much wheel/tire setup cost you?

 

wheel bought OEM from ebay Lexus dealer at $1160
tires set of 4 $ 695
Balance Road force $100 for 4 tires
Hunter Allignment $80

 

Lexus dealers sell parts on ebay? You might want to double check that order

 

Yes they do, I have bought several OEM Lexus parts from a dealer on eBay.

 

Bell Lexus here in Scottsdale sells on Amazon and Ebay I believe.

 

I have noticed the jerkiness when giving it throttle it after slowing down in traffic. Does the Amsoil really solve this?

 

Yes Amsoil solve this and its only take 5 1/2 quart, some guys drain and refill drive around 5 minutes and drain refill again, but mine just once with Amzoil and Jerking goes away . I replaced my old GX470 with this Amsoil too and the results is speechless.

Update:

The muffler mount doesn't do a good job I feel the mount is vibrating so I'm going to weld it by muffler guy

 

Thanks for the info. Did the position of dampers get rid of the droning? Was there one that was particular helpful? I had seen a post somewhere that suggested placing at the inlet of the muffler. I'm seeing the droning at around 2000 RPM, at any of the gears. Thanks for any help

 

with dampers it got rid of the droning. there is no particular placing but I assume the droning is should come from hollow pipe.

 

So my interest is peaked on the dampers. Are these Lexus dampers? I did find some part number references to the old 470 but not the 460. I can see the locations clearly in your pics but what made you decide on using 3 and the specific locations of each? Sorry for all the questions but after a few long road trips in the GX I am missing the silence from the old Benz...

Do you have any links to the dampers you used? Are you happy with the end result?

 

Part Number
Part Name
Price
Quantity
Total
17581-31010
Center Pipe Damper
$37.14
3
$111.42
Subtotal:
$111.42

 

Hello Sig
I picked the location where debris like plastic bags may not get caught by this damper. No science behind my placement but just imagination how the plastic bags might fly underneath the car.