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Aftermarket exhausts for IS 500

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Old Sep 15, 2022 | 10:54 AM
  #406  
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Originally Posted by lexussingh
Looks like a mistake. The 350 is pictured.
that has already been stated and brought to lexus' attention
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Old Sep 15, 2022 | 11:26 AM
  #407  
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Originally Posted by lexussingh
Do you have a link?
Originally Posted by cp2
you see the option when you build the 2023 IS on lexus.com
Yeah I just sent the screenshot from the website.

I got excited to have a warranty covered exhaust option but it doesn't look good.
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Old Sep 15, 2022 | 05:51 PM
  #408  
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Came across a smoking deal on the Apexi Mid-Pipe Non-Resonated a week ago. Arrived quickly and I got an appointment tomorrow to get it installed!! The system will be all stock, otherwise.




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Old Sep 15, 2022 | 07:08 PM
  #409  
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Originally Posted by RWCIS500LE
Came across a smoking deal on the Apexi Mid-Pipe Non-Resonated a week ago. Arrived quickly and I got an appointment tomorrow to get it installed!! The system will be all stock, otherwise.


Congrats!
Please post sound clips before and after.
I'm curious hear what just a mid pipe sounds like compared to stock.
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Old Sep 15, 2022 | 08:32 PM
  #410  
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A sound clip would be great.
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Old Sep 17, 2022 | 09:29 AM
  #411  
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Got it installed!

The fit and finish of the Midpipe is great. In my opinion this is how the car should have sounded from the factory. I am glad I went with the non-resonated. Dare I say I wish it was just a bit louder. It’s very enjoyable with the windows down!

One note: I drove home after the install and later in the day the dreaded CEL and Parking Brake error came on. Went back to the shop and we installed the factory gasket on top of the Apexi one and we cleared the codes and re torqued everything. It looks like the Apexi gasket may not be enough alone. If the codes come up again, may need to buy new factory gaskets and put those on. Not sure if anyone else has installed this or how they did it, your advice would be appreciated!

I will get a video up here within the next 2 hours, I want to do a cold start.


Nice and clean


With factory gasket

This is without the factory gasket, could leave room for leaks

Last edited by RWCIS500LE; Sep 17, 2022 at 10:08 AM.
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Old Sep 17, 2022 | 10:24 AM
  #412  
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Originally Posted by RWCIS500LE
Got it installed!

The fit and finish of the Midpipe is great. In my opinion this is how the car should have sounded from the factory. I am glad I went with the non-resonated. Dare I say I wish it was just a bit louder. It’s very enjoyable with the windows down!

One note: I drove home after the install and later in the day the dreaded CEL and Parking Brake error came on. Went back to the shop and we installed the factory gasket on top of the Apexi one and we cleared the codes and re torqued everything. It looks like the Apexi gasket may not be enough alone. If the codes come up again, may need to buy new factory gaskets and put those on. Not sure if anyone else has installed this or how they did it, your advice would be appreciated!

I will get a video up here within the next 2 hours, I want to do a cold start.


Nice and clean


With factory gasket

This is without the factory gasket, could leave room for leaks
Wow looks so clean, congrats dude!
Can't wait to hear it. How much louder than stock would you say it is?
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Old Sep 17, 2022 | 11:15 AM
  #413  
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RCF owners use Grimmspeed gaskets. Is that an option?
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Old Sep 17, 2022 | 12:50 PM
  #414  
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Originally Posted by AmbyBomb
RCF owners use Grimmspeed gaskets. Is that an option?
Why even bother? The OEM gaskets have been known to fix the problem. It’s been well-discussed here. @Fman2118
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Old Sep 17, 2022 | 01:25 PM
  #415  
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Originally Posted by macmaster
Why even bother? The OEM gaskets have been known to fix the problem. It’s been well-discussed here. @Fman2118
If the codes come up again, next would be to buy new OEM gaskets. Then if that doesn't work, we can look into aftermarket. Let's hope we don't have to go there though!

As far as compared to stock, it's louder for sure. Inside the car it sounds real nice, not too loud (the Lexus is well insulated) and no drone at all at highway speeds. When I drive by walls or underpasses I floor it and it sounds amazing!!

Here are the videos:

Stock:

With Apexi Non-Resonated Midpipe - Cold Start:

With Apexi Non-Resonated Midpipe:




Last edited by RWCIS500LE; Sep 17, 2022 at 01:30 PM.
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Old Sep 17, 2022 | 01:28 PM
  #416  
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That's pretty loud.
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Old Sep 17, 2022 | 01:34 PM
  #417  
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Originally Posted by macmaster
Why even bother? The OEM gaskets have been known to fix the problem. It’s been well-discussed here. @Fman2118
Because the Grimmspeed gaskets are thicker and less likely to leak.
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Old Sep 17, 2022 | 01:35 PM
  #418  
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That's how the car should have sounded stock.
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Old Sep 17, 2022 | 02:03 PM
  #419  
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I used stock gaskets with my Gthaus and I have had zero issues with cel so far. I need to get a video of a cold start.
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Old Sep 17, 2022 | 02:40 PM
  #420  
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Originally Posted by cp2
the exhaust air will pass through the midpipe smoothly but will go back to the crushed sections of the oem axle back. i'm not sure if the diameter of the oem axle back is smaller, but if they are causing some restriction on the way out. in theory, this may result more back pressure and maybe more tq?
Originally Posted by RWCIS500LE
If the codes come up again, next would be to buy new OEM gaskets. Then if that doesn't work, we can look into aftermarket. Let's hope we don't have to go there though!

As far as compared to stock, it's louder for sure. Inside the car it sounds real nice, not too loud (the Lexus is well insulated) and no drone at all at highway speeds. When I drive by walls or underpasses I floor it and it sounds amazing!!

Here are the videos:

Stock: https://youtube.com/shorts/FzK89x4rhLw?feature=share

With Apexi Non-Resonated Midpipe - Cold Start: https://youtube.com/shorts/h-cKbGsR-y8?feature=share

With Apexi Non-Resonated Midpipe: https://youtube.com/shorts/njqjFp_1OCY?feature=share
That sounds perfect to me. At this point it would be my #1 exhaust mod option, exactly as you did for all the same reasons.
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