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X-pipes: Stock vs. Borla vs. Corsa

 
Old 01-29-2015, 11:09 AM
  #41  
VetteLT4
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Originally Posted by Kracka View Post


Corsa's craftsmanship is definitely top-notch. The welds and construction quality are all very nice. Handing it felt like I had Thor's hammer in my grasp.
haha awesome analogy. so true. and spot on with the welds. I was pretty surprised at the welds of the stock xpipe. pretty sloppy looking. but corsa (and I assume borla) really improved it there. so for those who get a little scared off from headers and having to do a tune (like I did) and don't want to drop 2 grand on an exhaust when NPP is already pretty decent, the xpipe is a good way to go.
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Old 01-29-2015, 11:27 AM
  #42  
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Originally Posted by VetteLT4 View Post
I was pretty surprised at the welds of the stock xpipe. pretty sloppy looking. but corsa (and I assume borla) really improved it there.
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Old 02-02-2015, 03:46 PM
  #43  
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This is a great thread, thanks for all the advise, opinions, and personal experiences

The inventor of the x pipe was Dr Gas. I've experimented with his x pipes over the years and have formed a few conclusions:

Merging the 2 exhaust banks of a V8 make it sound more smooth, mellow, less popping, a little quieter, and a bit more European sounding than the classic American V8 deep tone. These new C7 X pipes eliminate the cats, that's the reason they can sound louder.

The longer the exhaust system is after the last merge the deeper the tone. The rearward x in the Corsa gives it a higher pitch vs the Borla's deeper tone with the single x farther forward.

We know adding an x gives a small power gain. But as a fan of the traditional deep V8 tone I'd still like to try a center pipe with no cats and no x, no merge at all. It would be cheap and light and would certainly provide a very deep tone with lots of the popping and farting everybody seems to love. But would a true dual exhaust like this sound too raunchy with no merge at all?

Has anyone considered trying this? Opinions welcome, flame away

(The excellent acoustic insulation of the C7 seems to have eliminated the interior drone issues that plagued C5s and C6s with loud exhaust systems)


.

Last edited by ZL-1; 02-02-2015 at 06:30 PM.
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Old 02-02-2015, 04:03 PM
  #44  
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Interesting thoughts/ideas. If you decide to give it a try please be sure and keep us updated, along with some pictures. I'd think any local exhaust shop would be able to fabricate something like that fairly quickly and easily at a reasonable price.
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Old 02-04-2015, 07:35 AM
  #45  
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How hard would it be to remove stock x pipe, knock cat material out, reinstall on car? The stock x pipe looks like it would flow pretty well except for the cats?
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Old 02-04-2015, 08:34 AM
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Originally Posted by TXArtic View Post
How hard would it be to remove stock x pipe, knock cat material out, reinstall on car? The stock x pipe looks like it would flow pretty well except for the cats?
I thought about that as well, and you're right, besides for the cats the stock pipe isn't that bad; not perfect, but on the better side as far as OEM exhaust piping is concerned. The cats are right at the inlet so you could easily cut the material out with a big hole saw, knock it out with a hammer and chisel, etc. If you attempt it, be sure to let us know and post a few pics, I'll be curious to hear how it works out. For starters, I'd use the biggest hole saw you can fit (3.0" or just under I'd imagine), wiggle that around in there, then get the rest with a hammer and chisel.

I think it would easily be a project that could be tackled either one evening or on a Saturday morning.

Last edited by Kracka; 02-04-2015 at 08:41 AM.
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Old 02-04-2015, 08:52 AM
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Originally Posted by Kracka View Post
I thought about that as well, and you're right, besides for the cats the stock pipe isn't that bad; not perfect, but on the better side as far as OEM exhaust piping is concerned. The cats are right at the inlet so you could easily cut the material out with a big hole saw, knock it out with a hammer and chisel, etc. If you attempt it, be sure to let us know and post a few pics, I'll be curious to hear how it works out. For starters, I'd use the biggest hole saw you can fit (3.0" or just under I'd imagine), wiggle that around in there, then get the rest with a hammer and chisel.

I think it would easily be a project that could be tackled either one evening or on a Saturday morning.
Yeah...i just have to wait for a warm evening or morning!
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Old 02-04-2015, 08:55 AM
  #48  
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Are you in Texas or the Arctic? That'll determine how long you'll be waiting
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Old 02-04-2015, 09:02 AM
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Originally Posted by Kracka View Post
Are you in Texas or the Arctic? That'll determine how long you'll be waiting
Dallas, suppose to be 74 this weekend!
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Old 02-04-2015, 09:04 AM
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Originally Posted by TXArtic View Post
Dallas, suppose to be 74 this weekend!
My girlfriend already requested we take the roof off and go to Fuel City in Dallas for tacos this weekend!
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Old 02-17-2015, 02:19 PM
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This just in, Z06 LT4 factory X-pipes are identical to the Stingray/Z51 LT1 X-pipes:
Originally Posted by JMB View Post
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Old 02-17-2015, 04:14 PM
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To just install the X-pipe, not changing the mufflers, how much loosening of the aft portion is needed to slip the new mid pipe?
Trying to figure if I can do it in my garage with just a ramp?
Thanks.
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Old 02-17-2015, 04:17 PM
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You just have to remove the X-pipe to axleback clamps, X-pipe hanger, and downpipe to X-pipe bolts. I did it in my garage with hand tools; I lifted the passenger side with a jack + jackstand and slid under the car on my back.

Last edited by Kracka; 02-17-2015 at 04:37 PM. Reason: spelling
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Old 02-17-2015, 04:36 PM
  #54  
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Originally Posted by Kracka View Post
You just have to remove the X-pipe to axleback clamps, X-pipe hangar, and downpipe to X-pipe bolts. I did it in my garage with hand tools; I lifted the passenger side with a jack + jackstand and slid under the car on my back.
Thank you!
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Old 02-18-2015, 03:01 AM
  #55  
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I've always been a corsa guy but man the price of exhaust is just over the top if you ask me. I think this time around I will do headers Xpipe no cats and stock exhaust. I bet it will sound pretty good that way. I can almost get heads/cam for the price of these exhaust!
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Old 02-18-2015, 10:46 AM
  #56  
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Kracka,
Where did you purchase the Borla X-Pipe?
I think I am going to try this on my 2015 Z06.
I did the same to an SRT-10 Viper awhile back, with good results.
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Old 02-18-2015, 10:51 AM
  #57  
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I got mine from MAPerformance.

You'd have to contact them for best pricing though, their website price is really high. Going published price is $495 at most places.
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Old 02-18-2015, 10:55 AM
  #58  
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Thank you.
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Old 02-21-2015, 04:16 PM
  #59  
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Here are a few videos my friend took this morning.

-ported OEM exhaust manifolds
-factory primary cat downpipes
-Borla X pipe
-NPP exhaust

Start-up in Tour mode:


Backing up in Sport mode:

Last edited by Kracka; 02-21-2015 at 04:23 PM.
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Old 03-02-2015, 07:21 PM
  #60  
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Okay so which one is louder? Borla or Corsa?
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