When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Hi Folks, I’m thinking about adding an Xpipe. I have all stock except for the Corsa Sports/Tigershark axle back.
Price wise, NEW, the Borlak seems substantially cheaper. I’m sure the quality is fine. My concern is fit. I have the instructions for the Corsa pipe and it all seems pretty cut and dry . I recently googled images for both Xpipes and they look very similar. I was mainly concerned about the layout of the pipes and would the Borla require modification beyond which is specified for the Corsa.
Seeking to reduce the motorboating sound.
thanks!
I have the Corsa Tiger Shark and just installed the Corsa X pipe. The popping is greatly reduced but not entirely eliminated. As recommended, I used a chain cutter to remove the rear section of the stock intermediate pipe. Be sure to get the measurements right before you cut and watch the orientation of the clamps before you slide them on. Also, it’s easier to use a lift and have someone help you. Good luck!
I'd make the investment and get a set of headers, you'd get a nice hp increase and some like my LG's come with the x-pipe included. Makes the install simpler. Also improves the exhaust tone.
I installed a Borla X pipe with a Borla S type axle back. There should be no modification to the X pipe itself. Just line up the flanges at the end of the stock H pipe with the new X pipe and mark where to cut at the other end with a sharpie. As said above get a chain type cutter to do the job. I got one to use for free from Advance Auto's loan-a-tool program.
what advantage is there adding an X pipe to an exhaust that already has an H pipe?
Supposedly gets a couple more hp, but it changes the sound from the ‘motorboating’ that’s referred to frequently. I recently saw a picture of an H pipe cut in the middle of the ‘H’, separating the 2 sides. There’s a hole in the center of each crossing section the size of a pinky. The X pipe has a much larger ‘meeting place’ for the exhaust gases to mix.
The sound is supposed to improve.
I have the Corsa Tiger Shark and just installed the Corsa X pipe. The popping is greatly reduced but not entirely eliminated. As recommended, I used a chain cutter to remove the rear section of the stock intermediate pipe. Be sure to get the measurements right before you cut and watch the orientation of the clamps before you slide them on. Also, it’s easier to use a lift and have someone help you. Good luck!
If you use a chain cutter, can the job be done with the car up on ramps? (All 4 wheels). I can’t imagine laying under the car with a sawzall, but a manual tool seems possible.
From: Arlington Va Current ride 04 vert, previous vettes: 69 vert, 77 resto mod
Originally Posted by chasboy
Supposedly gets a couple more hp, but it changes the sound from the ‘motorboating’ that’s referred to frequently. I recently saw a picture of an H pipe cut in the middle of the ‘H’, separating the 2 sides. There’s a hole in the center of each crossing section the size of a pinky. The X pipe has a much larger ‘meeting place’ for the exhaust gases to mix.
The sound is supposed to improve.
thanks, adding and X pipe or H pipe makes all the difference especially with droning of true duals with any sort of stepped up cam and it especially picks up low end torque. i saw this on my 77 resto mod first hand.
i didnt realize the C5 H pipe was restricted I wonder why the engineers did that...must have been for a reason. thanks bob
If I can find the pic I will post it. I was very surprised at what I saw. I was expecting the holes to be close to the size of the cross pipe.
Found one!
this is not the pic I saw, but it’s close.
From: Arlington Va Current ride 04 vert, previous vettes: 69 vert, 77 resto mod
Originally Posted by chasboy
If I can find the pic I will post it. I was very surprised at what I saw. I was expecting the holes to be close to the size of the cross pipe.
Found one!
this is not the pic I saw, but it’s close.
wow that is small....i made my H pipe on my '77 2.5 true duals and it was completely open.....
maybe a C5 design engineer will chime in and enlighten us. thanks bob
One of the flanges on my stock H pipe broke when I put my axle back on. I did not want to re-weld it so I went with the Borla X pipe. Pic of my stock H pipe cut open,
From: Arlington Va Current ride 04 vert, previous vettes: 69 vert, 77 resto mod
so that says to me they are only equaling out the high pressure pulses and that they dont want it to be unrestricted for some reason. they could have made that hole any size they wanted.....
so that says to me they are only equaling out the high pressure pulses and that they dont want it to be unrestricted for some reason. they could have made that hole any size they wanted.....
AND made a cleaner hole?
Couple of things,
I have a bid on a new Borla X now. Does the Borla come with the holes for the oxygen sensors?
I really want to do this at home by myself but I get a little claustrophobic under the car, even if it’s on my very sturdy ramps. Any advice on getting it a bit higher? With jacks stands I’m ok with the room, but I then get nervous about them tipping over.
From what I see from pix online, the only difference between the Borla and Corsa is the Borla is not as ‘shiny’(?) as the Corsa and $100 less.
Thanks gang.
When you add an x-pipe you eliminate the H-pipe. Having both would do nothing much as the stock h-pipe, which is useless. If Chevy made the hole in the h-pipe the correct full size, the stock exhaust would sound much better, more rumble, better performance. I can't figure why they designed it the way they did. Well it keeps it aligned better. X-pipes can sometimes make exhaust systems sound terrible, they can make the sound so high pitched your car would be undriveable. Years ago I had a friend who makes custom exhaust systems build one for my street rod. It sounded horrible, you couldn't ride in the car. It would hurt your ears. Within one week we were putting in a new exhaust, H-pipe instead with different mufflers. Now it sounded like a Hot Rod should.
AND made a cleaner hole?
Couple of things,
I have a bid on a new Borla X now. Does the Borla come with the holes for the oxygen sensors?
I really want to do this at home by myself but I get a little claustrophobic under the car, even if it’s on my very sturdy ramps. Any advice on getting it a bit higher? With jacks stands I’m ok with the room, but I then get nervous about them tipping over.
From what I see from pix online, the only difference between the Borla and Corsa is the Borla is not as ‘shiny’(?) as the Corsa and $100 less.
Thanks gang.
You need a garage to do it? I've got all the tools you'd need except the chain cutter. 8 jackstands for better insurance and two floorjacks.
Xpipe Comparison
. I recently googled images for both Xpipes and they look very similar. I was mainly concerned about the layout of the pipes and would the Borla require modification beyond which is specified for the Corsa.
