X-pipe
Thread Starter
7th Gear
Joined: Mar 2020
Posts: 7
Likes: 0
X-pipe
Hey everyone -
im new to this so please be patient-
I recently bought a very clean low mile C7 3LT Z51. I’m very happy with it but have been doing a lot of mods-
I just received my Borla X pipe and notice I have to keep the Catalytic converters, what?
uuugh - is this going to give me the same sound I’m looking for or will this just me more of the same of what I have.
it the Borla a bigger diameter than the original?
should I consider having someone lengthen it for me. I called Borla and they said they stopped selling because they were illegal. Hmmm ... what to do
any ideas?
I appreciate any help-
im new to this so please be patient-
I recently bought a very clean low mile C7 3LT Z51. I’m very happy with it but have been doing a lot of mods-
I just received my Borla X pipe and notice I have to keep the Catalytic converters, what?
uuugh - is this going to give me the same sound I’m looking for or will this just me more of the same of what I have.
it the Borla a bigger diameter than the original?
should I consider having someone lengthen it for me. I called Borla and they said they stopped selling because they were illegal. Hmmm ... what to do
any ideas?
I appreciate any help-
Intermediate
Joined: Nov 2019
Posts: 49
Likes: 7
From: Phenix City, Al.
Yep! With the Borla pipe that you purchased you will have to cut your cats and weld to the new x pipe. That defeats the purpose! The old Borla had the flange ends onto the pipe. Others on the market like Corsa, Awe and Manzo. I purchased the Manzo today from eBay. Some other forum members have used the same with no issue.
Drifting
Joined: Apr 2011
Posts: 1,755
Likes: 198
From: Southington CT
I have the Borla X-Pipe installed on my car. Remove the old pipe and just install the Borla with no cats. The rear cats are not computer tracked just the fronts and the sound is great. Is this legal? You decide but all of us (to my knowledge) have done it this way. By the way, where did you purchase the Borla ?
Last edited by Stan0324; Mar 16, 2020 at 10:55 PM.
Thread Starter
7th Gear
Joined: Mar 2020
Posts: 7
Likes: 0
I have the Borla X-Pipe installed on my car. Remove the old pipe and just install the Borla with no cats. The rear cats are not computer tracked just the fronts and the sound is great. Is this legal? You decide but all of us (to my knowledge) have done it this way. By the way, where did you purchase the Borla ?
Racer
Joined: May 2013
Posts: 280
Likes: 262
From: Cabot, AR
You can do that but you’ll throw a check engine light for the cats if you don’t have a way to turn them off. Back in the day you could buy sims to plug into the O2 wiring harness to turn the light off. I don’t think they are available anymore. If you have HPtuners you can turn the light off also. Or know someone that does have it. And really, if you’re gonna go to that trouble, you might as well just put a set of long tubes on it and gain some hp.
Last edited by jaywoo; Mar 16, 2020 at 11:55 PM.
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Le Mans Master
Joined: May 2010
Posts: 5,357
Likes: 2,409
Don’t waste your time with the Borla you have. Corsa has been very popular as well and is still available. Also the AWE sounds like an option here.
Safety Car
Joined: Jul 2018
Posts: 4,303
Likes: 2,055
From: Margate, FL
Borla no longer sells the cat-less aka "off road" x-pipe. I have the original and it sounds great... but the government cracked down on them for selling an emissions cheating device.
As mentioned the C7 has four catalytic converters: two in front that are monitored and two in the back on the x-pipe which are not. So removing the rear cats by doing a cat-less x-pipe mod will not generate any engine codes.
As mentioned the C7 has four catalytic converters: two in front that are monitored and two in the back on the x-pipe which are not. So removing the rear cats by doing a cat-less x-pipe mod will not generate any engine codes.
Banned Scam/Spammer
Joined: Jan 2019
Posts: 346
Likes: 131
BJPC7;
My X-pipe: Corsa 3.0" Double Helixx X-pipe #14761 Corvette C7 $521.13.
-HP= +5
-Torque=+4
-Increased air flow=+20.24%
-Weight reduction=-2.1lbs
*Washington State no longer tests vehicle emissions starting this year, signed by Gov. Jay Inslee.*
Note: Took me 1.25 hours to install.
Many thanks,
Ray
My X-pipe: Corsa 3.0" Double Helixx X-pipe #14761 Corvette C7 $521.13.
-HP= +5
-Torque=+4
-Increased air flow=+20.24%
-Weight reduction=-2.1lbs
*Washington State no longer tests vehicle emissions starting this year, signed by Gov. Jay Inslee.*
Note: Took me 1.25 hours to install.
Many thanks,
Ray
Burning Brakes
Joined: Aug 2001
Posts: 837
Likes: 388
From: Olathe KS
This is exactly what I would do and, if I ever add an X-pipe now that the Borla and AWE off-road pipes are no longer able to be purchased (well, the AWE is almost sold out and those that are left are being sold for $50 more now by the one vendor selling them) is exactly what I'd do. Or I might just cut out the rear cats and replace them with a straight piece of exhaust tubing since our cars already have an x-pipe on them. Returning what you own and replacing it with an AWE or Corsa is of zero value, just a headache for you. Just install what you have but have your exhaust shop install a section of exhaust tubing in place of the cats vs welding the Borla to your rear cats. As long as you don't mess with the cats in the down pipes you won't have any codes. On a stock car though the X-pipe isn't really worth any gains other than sound. The only reason to trade your pipe in for an AWE is if you want to go back to stock easily later. That's it.