GX - 2nd Gen (2010-2023) Discussion topics related to the 2010 + GX460 models

Aftermarket muffler/exhaust options

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Old 12-16-18, 05:03 AM
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Acrad
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Old 08-16-20, 12:35 PM
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Old 01-04-21, 01:52 PM
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cs729
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Default Aftermarket muffler/exhaust options

Hey all,

I did my best to search through the previous threads but could not find any info on what i'm after so here I am.

I'm on the hunt to replace my OEM muffler for an aftermarket one with a little more noise without it getting too loud and obnoxious (with the lacklustre fuel economy, i want to at least HEAR where my gas money is going).

I have narrowed it down to either the Flowmaster 50 Series Delta Flow or the Flowmaster Super 50 but I cannot find information on what style i would need, besides knowing it would be a 2.5" inlet/outlet. Can anyone who has gone ahead with an aftermarket exhaust/muffler let me know what size I would need and if the inlet/outlet needs to be inline or offset?

Here is a link for further info: https://www.holley.com/products/exha...w/parts/942551
Old 01-04-21, 09:05 PM
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Originally Posted by cs729
Hey all,

I did my best to search through the previous threads but could not find any info on what i'm after so here I am.

I'm on the hunt to replace my OEM muffler for an aftermarket one with a little more noise without it getting too loud and obnoxious (with the lacklustre fuel economy, i want to at least HEAR where my gas money is going).

I have narrowed it down to either the Flowmaster 50 Series Delta Flow or the Flowmaster Super 50 but I cannot find information on what style i would need, besides knowing it would be a 2.5" inlet/outlet. Can anyone who has gone ahead with an aftermarket exhaust/muffler let me know what size I would need and if the inlet/outlet needs to be inline or offset?

Here is a link for further info: https://www.holley.com/products/exha...w/parts/942551
IMHO ... FlowMaster, MagnaFlow, Etc are great on American V8's but absolutely do not belong on a Lexus or any foreign vehicle for that matter ... the sound is just not right, plus these are guaranteed to drone at speed so will eventually drive you insane, and require that you consume a carton of Marlboro's weekly.

There is Loud, and then there is Deep and Commanding ... with Borla knowing how to design mufflers that make their presence known on light throttle, have a perfect amount of attitude when jumping on the pedal ... and absolutely do not drone at constant speed ... plus they have less back pressure for improved flow compared to the FlowMaster chamber design.

Last edited by ASE; 01-04-21 at 09:10 PM.
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Old 01-05-21, 12:16 PM
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Ah yes i completely forgot about Borla! thanks for reminding me. I'm certainly not looking for a loud, obnoxious tone so i will be sure to check them out.

Is there any info on the specs for the OEM muffler that are around? I'd like to try and match up one of the universal mufflers to something as close to the stock size & specs as possible.
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Old 04-27-21, 03:33 PM
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Just checked Borla and say nothing available for my 2011 Lexus. Actually Lexus is missing from the list
Old 04-27-21, 06:57 PM
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I recently installed the Magnaflow Overlanding cat-back, quite happy with it. Mellow tone, and high clearance tailpipe.
Old 04-27-21, 09:48 PM
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Don't.....DON'T do the Flowmaster 50. I put that on my 4.6L Tundra. Sounded good in general at first. But got droney after a time. Of course my Tundra didn't have the resonator like the GX does.

IF...you really want a Flowmaster go 70 series.

Last edited by BigLClub; 04-28-21 at 12:40 PM.
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Old 04-28-21, 09:02 PM
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Originally Posted by 10acimport
Just checked Borla and say nothing available for my 2011 Lexus. Actually Lexus is missing from the list
Use one of their universal mufflers.
Old 04-29-21, 12:59 AM
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JayPixelGX
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Originally Posted by ASE
Use one of their universal mufflers.
https://www.borla.com/products/proxs...-muffler-40665

By the specs it seems this is 1.5 inches thinner than stock 5.5 stock vs 4 Borla?



Old 08-31-21, 02:31 PM
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Stock Exhaust Info









Last edited by Acrad; 11-13-21 at 07:30 AM.
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Old 02-04-22, 12:35 PM
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https://www.drive2.ru/c/467839999669174539/










Last edited by Acrad; 02-04-22 at 03:09 PM.
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Old 08-17-22, 09:00 AM
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Has anyone tried the AFE exhaust? I usually lean Borla, but alas, there is nothing for the GX 460.

https://afepower.com/afe-power-49-36...w-polished-tip
Old 08-18-22, 04:31 PM
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Originally Posted by geckornr
Has anyone tried the AFE exhaust? I usually lean Borla, but alas, there is nothing for the GX 460.

https://afepower.com/afe-power-49-36...w-polished-tip
I was planning to go with the AFE exhaust but im going to wait for the Tanabe USA exhaust
Old 08-18-22, 04:51 PM
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Originally Posted by tonyrd1
I was planning to go with the AFE exhaust but im going to wait for the Tanabe USA exhaust
I did not know Tanabe had one in development - do you have anymore details?


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