X-pipes: stock vs. Borla vs. Corsa
03-07-2018, 11:30 AM
#341
Le Mans Master
Thread Starter
Correct, 47 is the part # you want.
03-11-2018, 05:23 PM
#343
Instructor
Kracka
Thanks for the superb write up and pics! Bought my C7 Stingray last year and have been reading a lot about mods to customize to my taste. Crummy winter so I have been busy making my beauty my own! Thanks to your write up I pulled the trigger and installed the Borla Off Road XPipe today. Not complicated, lots if bolts but I have a quick jack 5000 so easy to get under her. I did the swap by myself with not too much difficulty ( I’m 60) but if I do it again I’ll get an extra hand for installing. Taking the stock pipe off is a breeze but a little heavy lying on your back. Lining up the Borla would have been nice to have help to speed everything up! Sound is great at cold start and WOT as many have said, but not much louder any other time and I have fuse pulled. I think I will see how it goes this spring and decide if I want to add the ATAK axle back next. Anyway thanks again for the thread! I am enjoying my first Corvette!
Thanks for the superb write up and pics! Bought my C7 Stingray last year and have been reading a lot about mods to customize to my taste. Crummy winter so I have been busy making my beauty my own! Thanks to your write up I pulled the trigger and installed the Borla Off Road XPipe today. Not complicated, lots if bolts but I have a quick jack 5000 so easy to get under her. I did the swap by myself with not too much difficulty ( I’m 60) but if I do it again I’ll get an extra hand for installing. Taking the stock pipe off is a breeze but a little heavy lying on your back. Lining up the Borla would have been nice to have help to speed everything up! Sound is great at cold start and WOT as many have said, but not much louder any other time and I have fuse pulled. I think I will see how it goes this spring and decide if I want to add the ATAK axle back next. Anyway thanks again for the thread! I am enjoying my first Corvette!
Last edited by DSPC7; 03-11-2018 at 11:54 PM.
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MerakiAutoworks (03-30-2018)
03-30-2018, 03:36 PM
#345
Burning Brakes
Cutting Cats
I’ve decided to go to a local muffler shop and have the back cats cut off and replaced with piping. Cost is approximately $200. Does anybody see if this is any different then putting on a Borla X pipe?
03-30-2018, 03:52 PM
#346
Le Mans Master
Thread Starter
The end result should be about the same sound and power wise, it just won't be a direct bolt-on or as clean and reversible. Make sure the shop uses either 2.75" or 3.0" piping, and not 2.5" like I've seen some do.
Last edited by Kracka; 03-30-2018 at 03:52 PM.
04-27-2018, 10:52 AM
#347
Good video of Dyno tests of Xpipes
Saw this video today. The guys put the stock Z06 on the dyno then tried 3 different xpipes:
Stock HP 578
Stock TQ 602
Borla HP 605 (+27)
Borla TQ 615 (+13)
Corsa HP 595 (+17)
Corsa TQ 615 (+13)
Stock HP 578
Stock TQ 602
Borla HP 605 (+27)
Borla TQ 615 (+13)
Corsa HP 595 (+17)
Corsa TQ 615 (+13)
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Kracka (04-27-2018)
04-27-2018, 10:55 AM
#348
Le Mans Master
Thread Starter
I emailed with David Borla shortly after creating this thread, he said they did experiment with 3.0" piping during the R&D process but found the more expensive and less common 2.75" piping (like stock) made more power.
Last edited by Kracka; 04-27-2018 at 10:55 AM.
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MarkRacerX (04-27-2018)
04-27-2018, 12:05 PM
#349
Safety Car
Dyno OR Track results, which would you chose/really count.
If I would of got the same results/better at the drag strip with the 3" Corsa it would of stayed on but it slowed me down in the 60' with worst et and mph at the end of the 1/4 over stock. Also see post #189.
Never tried the Borla.
Never tried the Borla.
Last edited by C7/Z06 Man; 04-27-2018 at 12:34 PM.
12-10-2018, 07:32 PM
#350
Racer
I have wrapped mine, corsa style pipe, thinking that keeping the thermal losses to a minimum would offset the pip dia increase and keep the volume/velocity of the gasses about what they would be with the smaller borla pipe unwrapped. I am not an engineer but thermo/fluid minded so I think it would work, but wonder if the increased turbulence of the dual cross talk might be the cause of the loss in power you experienced. As an air pump in concerned, smoother flow can outflow improvements to reduced restriction on a plumbing system as the dual x would mess up the laminar flow twice. Thanks for your real world info, and had I read your post before buying mine I would have stuck with the simpler borla design.
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C7/Z06 Man (12-10-2018)
12-10-2018, 10:40 PM
#351
Saw this video today. The guys put the stock Z06 on the dyno then tried 3 different xpipes:
Stock HP 578
Stock TQ 602
Borla HP 600 (+22)
Borla TQ 615 (+13)
Corsa HP 595 (+17)
Corsa TQ 616 (+14)
https://www.youtube.com/watch?v=-8l27NfE2-k
Stock HP 578
Stock TQ 602
Borla HP 600 (+22)
Borla TQ 615 (+13)
Corsa HP 595 (+17)
Corsa TQ 616 (+14)
https://www.youtube.com/watch?v=-8l27NfE2-k
5 hp isn't as much difference. But I am very surprised of about a 20 hp increase.
12-11-2018, 05:42 PM
#353
Le Mans Master
Thread Starter
03-10-2019, 06:56 AM
#354
Safety Car
Lot of very experienced guys posting in this thread. Thank you all very very much for such excellent information, pics, and opinions! You all are very appreciated!
From your experience I'd like to hear what you think about this idea to simply get a lower deeper "old school sound". It is not to get any power increase, and I do not care at all if it loses a little, I am simply wanting to get more of an old school deeper tone.
I'd like to cut the X out of the x-pipe so that it is 2 separate pipes. Do you think that will get the sound I'm after? And be the deeper and more old school sound?
.
From your experience I'd like to hear what you think about this idea to simply get a lower deeper "old school sound". It is not to get any power increase, and I do not care at all if it loses a little, I am simply wanting to get more of an old school deeper tone.
I'd like to cut the X out of the x-pipe so that it is 2 separate pipes. Do you think that will get the sound I'm after? And be the deeper and more old school sound?
.
03-10-2019, 11:13 AM
#355
Safety Car
Not running a balance pipe i.e. X or H pipe you may notice that one side of the exhaust has a stronger pulse at idle due to a cylinder or two on one of the banks having slightly more compression and/or more restriction due to the exhaust design (being different) on one side. A balance pipe will equal out the exhaust flow (pressure) of the system which affects power, etc. 
Last edited by C7/Z06 Man; 03-10-2019 at 01:21 PM.
03-10-2019, 12:17 PM
#356
Safety Car
Lot of very experienced guys posting in this thread. Thank you all very very much for such excellent information, pics, and opinions! You all are very appreciated!
From your experience I'd like to hear what you think about this idea to simply get a lower deeper "old school sound". It is not to get any power increase, and I do not care at all if it loses a little, I am simply wanting to get more of an old school deeper tone.
I'd like to cut the X out of the x-pipe so that it is 2 separate pipes. Do you think that will get the sound I'm after? And be the deeper and more old school sound?
.
From your experience I'd like to hear what you think about this idea to simply get a lower deeper "old school sound". It is not to get any power increase, and I do not care at all if it loses a little, I am simply wanting to get more of an old school deeper tone.
I'd like to cut the X out of the x-pipe so that it is 2 separate pipes. Do you think that will get the sound I'm after? And be the deeper and more old school sound?
.
03-10-2019, 12:25 PM
#357
Le Mans Master
Thread Starter
It would be pretty easy for any decent exhaust shop to do. My suggestion would be one of the cheap eBay 3" X-pipes and let them go to town on it.
03-10-2019, 12:27 PM
#358
Lot of very experienced guys posting in this thread. Thank you all very very much for such excellent information, pics, and opinions! You all are very appreciated!
From your experience I'd like to hear what you think about this idea to simply get a lower deeper "old school sound". It is not to get any power increase, and I do not care at all if it loses a little, I am simply wanting to get more of an old school deeper tone.
I'd like to cut the X out of the x-pipe so that it is 2 separate pipes. Do you think that will get the sound I'm after? And be the deeper and more old school sound?
.
From your experience I'd like to hear what you think about this idea to simply get a lower deeper "old school sound". It is not to get any power increase, and I do not care at all if it loses a little, I am simply wanting to get more of an old school deeper tone.
I'd like to cut the X out of the x-pipe so that it is 2 separate pipes. Do you think that will get the sound I'm after? And be the deeper and more old school sound?
.
