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If you are on the fence regarding x-pipes...

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Old 10-28-2018, 07:49 AM
  #21  
devnull
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Originally Posted by ElisTwoCents
Next mod is a camera so you can rev/record at same time! Looks good though
Tell me about it! THANKS haha
Old 10-28-2018, 08:57 AM
  #22  
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Originally Posted by Sellout
Pretty sure the only flaps that would be closing are the ones in the tailpipe that you can see open in the video. The other valves in front of the mufflers don't close when the car is idling, cold or warm.
You’re right, and to further the point this is a 2019 M7 and does not have AFM valves at all, so even if they would close, they can’t on this one!
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Old 10-28-2018, 10:13 AM
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Originally Posted by KenHorse
Everything else is stock?

For $350, that seems like an easy and worthwhile mod!

How's drone ?
Where can I get a Borla x-pipe for $350? Does it add any performance gains? Thanks..
Old 10-28-2018, 10:25 AM
  #24  
KenHorse
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Originally Posted by justplainjim
Where can I get a Borla x-pipe for $350? Does it add any performance gains? Thanks..
Even from Borla, it's only $379

https://www.borla.com/products/c7_co...rt__60548.html

Old 10-28-2018, 10:27 AM
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Thanks Ken, didn't realize that..
Old 10-28-2018, 10:38 AM
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timmyZ06
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Why nobody is gutting their cats??!! Zero dollards and same results as borla!!
Old 10-28-2018, 10:39 AM
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Originally Posted by Maxie2U
Why does Borla website have the following warning listed under the x-pipe product?

“LEGAL ONLY FOR RACING VEHICLES THAT MAY NEVER BE USED, OR REGISTERED OR LICENSED FOR USE ON A HIGHWAY”
Because the installation of this pipe results in the removal of the secondary cats which is technically illegal.
Old 10-28-2018, 11:10 AM
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I gutted my cats which is free. But x pipe is def easier to install for someone that doesn't have the tools that help make it not so tough.
Gutting converters is not the easiest to do. Plus it looks so much better.
Old 10-28-2018, 11:22 AM
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Originally Posted by timmyZ06
Why nobody is gutting their cats??!! Zero dollards and same results as borla!!
i like to keep the stock one so that I can put it back for street driving and off for track days...

Old 10-28-2018, 11:30 AM
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Just installed this about a month ago on my 17 Z06. It does add a bit of power. However the biggest benefit is the louder and deeper exhaust. I absolutely love it. I also installed a mild to wild switch though out of respect for my neighbors. This way I can close the valve in the early morning hours or late evening as it is about 20% louder than stock.
Old 10-28-2018, 12:01 PM
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Originally Posted by KenHorse

Isn't this the price for the 60548? I thought the 60547 was more expensive..?

Old 10-28-2018, 12:04 PM
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Originally Posted by Bigfoot16
Isn't this the price for the 60548? I thought the 60547 was more expensive..?
correct. The 60548 retains the factory rear cats and you wind up cutting them and clamping the pipe to them. The 60547 is the one I installed and removed the rear cats (leaving the front ones).
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Old 10-28-2018, 12:25 PM
  #33  
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Originally Posted by Sellout
Nothing. Those cats are not monitored (behind the second O2 sensors)
True, but in the interests of full disclosure to anyone considering this, elimination of the secondary cats can cause problems in a number of states. In MD for example, they use a floor mirror to look for their absence on the required bi-annual emissions certification. That alone causes a failure, which means you can't renew your registration without correcting the deficiency.

Just a heads up to check the situation in your state before taking the plunge, and make an informed decision on whether or not to proceed. Yes, you can always remount before going to inspection, but that is a PIA to most folks that may not be worth a rather small benefit.

Last edited by Foosh; 10-28-2018 at 12:46 PM.
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Old 10-28-2018, 12:27 PM
  #34  
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Originally Posted by devnull
Just hit 504 miles on the Grand Sport, so I did an oil change and decided it was time to throw that Borla 60547 xpipe I had on it. I've been here 2 other times with other C7's, but it never ceases to amaze me just how big of a difference these things make. WOW.

The video is just a quick start and comparison of idle since I can't simultaneously record and rev the motor at once. I'll get that video tomorrow or something.

I am ready to pull the trigger on the Borla 60549 xpipe as well!. I just want to know where you picked it up for $350!!!
Old 10-28-2018, 12:32 PM
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Originally Posted by Foosh
True, but in the interests of full disclosure to anyone considering this, elimination of the secondary cats can cause problems in a number of states. In MD for example, they use a floor mirror to look for their absence on the required bi-annual emissions certification. That alone causes a failure, which means you can't renew your registration without correcting the deficiency.

Just a heads up to check the situation in your state before taking the plunge.
If you keep the stock Xpipe you can just put it back on for inspection. It’s such an easy swap it’s not worth worrying about. Also with the cover under the car I don’t think you can see the rear resonators that are deleted.
Old 10-28-2018, 12:40 PM
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Originally Posted by saleen556


If you keep the stock Xpipe you can just put it back on for inspection. It’s such an easy swap it’s not worth worrying about. Also with the cover under the car I don’t think you can see the rear resonators that are deleted.
if I have to do this every time I have to have the car DEQ’d in order to renew the registration I’m out. Call it too much of a PITA.
Old 10-28-2018, 12:42 PM
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Originally Posted by saleen556


If you keep the stock Xpipe you can just put it back on for inspection. It’s such an easy swap it’s not worth worrying about. Also with the cover under the car I don’t think you can see the rear resonators that are deleted.
if I have to reinstall the stock Xpipe every time I have to have the car DEQ’d in order to renew the registration I’m out. Call it too much of a PITA.

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Old 10-28-2018, 12:43 PM
  #38  
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Originally Posted by Maxie2U


if I have to do this every time I have to have the car DEQ’d in order to renew the registration I’m out. Call it too much of a PITA.
If they just do the OBD test you’ll be fine as the rear resonators aren’t monitored. I don’t believe any state can actually remove the panel under the vehicle for inspection. Therefore they would never know.
Old 10-28-2018, 12:48 PM
  #39  
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They are still visible with a convex floor mirror, which is used in my state along w/ the OBDII plug in. Of course, some inspectors are more diligent than others, and as the iconic movie quote goes, " you have to ask yourself, am I feeling lucky today . . ." For some the benefits are too small to be worth it.

Last edited by Foosh; 10-28-2018 at 12:56 PM.
Old 10-28-2018, 12:51 PM
  #40  
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Originally Posted by Maxie2U


if I have to reinstall the stock Xpipe every time I have to have the car DEQ’d in order to renew the registration I’m out. Call it too much of a PITA.
Here in Marion County, no DEQ requirement

Last edited by KenHorse; 10-28-2018 at 12:53 PM.


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