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

GSF Exhaust -> GS350

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Old 06-14-23, 12:01 AM
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Wotan2666
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Default GSF Exhaust -> GS350

Hi, idk if someone already talked about this could not find it here but, did someone try to take the catback exhaust from GSF and smack it on the GS350? From pictures those mounting bracket looks to be on the same place but not sure if they would fit. i mean the chassis should be almost the same so would there be some problems can it be done, did it someone? Thanks.
Old 06-14-23, 08:11 AM
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jgscott
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Yes have looked at this a few times myself. Parts of it anyway. The Midsection crosser merge section is a bigger (longer) unit on the GS F, likely to control noise more from the V8. The other problem is the muffler exit tips. They are double stacked tips. So they wont fit the holes in the rear diffuser were our tips are different.
Old 06-15-23, 12:42 AM
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yes i noted those double stacked tips but there are some aftermarket rear diffs that would allow for this type of an exhaust, but what about those curves and brackets thats is my thought, do you know how much longer is the midpipe? Or if atleast axleback would fit to the 350 midpipe. So the only option we have is to try it and as i can see nobody tried it probably
Old 01-15-24, 08:52 PM
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Gary350F
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Default Poor man’s GSf muffler conversion.

GSF exhaust on GS F sport can be done with OEM used parts. Actually sounds better than the original exhaust.
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Old 01-15-24, 11:08 PM
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So, did you change the whole rear bumber or just the rear difuser?
Old 01-16-24, 05:53 AM
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Originally Posted by Gary350F
GSF exhaust on GS F sport can be done with OEM used parts. Actually sounds better than the original exhaust.
I'm curious as to what it sounds like.
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Old 01-16-24, 06:49 AM
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Radomiaczki
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@Gary350F
I second what Wotan2666 asked?

Did you replaced whole rear bumper or only diffuser/valance part.
I found two below threads which mention that full bumper need to be replaced but without definitive answer.
https://www.clublexus.com/forums/gs-...sport-pic.html
https://www.clublexus.com/forums/gs-...onversion.html
Old 01-16-24, 07:33 AM
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Ok, because I try to fit the diffuser on the old GS350AWD bumper and try to figure it out how to do it
Old 01-16-24, 07:34 AM
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Originally Posted by Radomiaczki
@Gary350F
I second what Wotan2666 asked?

Did you replaced whole rear bumper or only diffuser/valance part.
I found two below threads which mention that full bumper need to be replaced but without definitive answer.
https://www.clublexus.com/forums/gs-...sport-pic.html
https://www.clublexus.com/forums/gs-...onversion.html
Ok, because I try to fit the diffuser on the old GS350AWD bumper and try to figure it out how to do it
Old 01-16-24, 09:33 PM
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@Wotan2666 not sure if the conversion can be done in the older GS, or AWD but definitely 2016 -2020 GS. GSF bumper, bracket is required and spare tire wheel well needed some adjustment. Most parts I purchased are mostly from local FB market except bumper trims from the dealer.

While the bumper is down I’ve replaced the side reflector with drl led rear bumper light reflectors which enhance the visibility of the car.



Last edited by Gary350F; 01-16-24 at 09:54 PM.
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Old 01-17-24, 02:33 AM
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Originally Posted by Gary350F
@Wotan2666 not sure if the conversion can be done in the older GS, or AWD but definitely 2016 -2020 GS. GSF bumper, bracket is required and spare tire wheel well needed some adjustment. Most parts I purchased are mostly from local FB market except bumper trims from the dealer.

While the bumper is down I’ve replaced the side reflector with drl led rear bumper light reflectors which enhance the visibility of the car.

Don't like the Idea of hammering the body so they fit there, I was hoping, that because the exhaust from GSF is "cheap" that this would be a good option. I must say it looks good, but if I have to modify the body and also buy a new bumper that is around 1000 USD plus some small stuff then it does come to the 2000 USD plus, already got the diffuser at home and was playing with in and how to put it on the bumper but for that money I can buy APEXI N1 with some cool aftermarket diffuser without hammering the body.
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Old 01-17-24, 06:58 AM
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It’s not as bad as you think most part I’ve purchased used GSF with less than 60k miles and didn’t spent over 1K. Painting was the most expense doing the conversion Just have to be patience looking for used parts. Good luck!
Old 01-17-24, 08:15 AM
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Originally Posted by Wotan2666
Don't like the Idea of hammering the body so they fit there, I was hoping, that because the exhaust from GSF is "cheap" that this would be a good option. I must say it looks good, but if I have to modify the body and also buy a new bumper that is around 1000 USD plus some small stuff then it does come to the 2000 USD plus, already got the diffuser at home and was playing with in and how to put it on the bumper but for that money I can buy APEXI N1 with some cool aftermarket diffuser without hammering the body.
So you got diffuser only (lower part)? Please let me know how it goes attaching it to the bumper.
I am with you on the fact that adding whole bumper to the mix is not economical and also in Europe there is not so easy access to used GSF parts hence high prices.
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Old 01-18-24, 01:11 AM
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Originally Posted by Radomiaczki
So you got diffuser only (lower part)? Please let me know how it goes attaching it to the bumper.
I am with you on the fact that adding whole bumper to the mix is not economical and also in Europe there is not so easy access to used GSF parts hence high prices.
tell me about it, I'm from Switzerland and know this problem that we have with parts, there are few GSF driving around in EU so its difficult, as of the bumper will make some photos of the GSF Diffuser and GS350 bumper
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