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X-pipe only?

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Old Dec 7, 2019 | 07:24 PM
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Default X-pipe only?

Is it worth it?

2018 M& Z. I have a ported TB & an AFE intake. NO other mods in the future.

Should I bother?
Benefits?
Negatives?
A little more exhaust volume and a few ponies would be a plus I suppose.

Thanks!
Ron

Last edited by Dr.Ron; Dec 8, 2019 at 08:28 PM.
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Old Dec 7, 2019 | 07:53 PM
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I’d say so, sure. I think the potential horsepower gains are negligible but, I’ll take a bit more sound; I think most of us would.
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Old Dec 7, 2019 | 08:32 PM
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Yes.
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Old Dec 7, 2019 | 08:42 PM
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Shows several with dyno results.


Best. Tom.
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Old Dec 8, 2019 | 03:50 AM
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Yes definitely. I have the borla and wish I didn't wait months to install it! Sounds great!!
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Old Dec 8, 2019 | 09:07 AM
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An X pipe is a good mod for those not wanting headers. AWE and Corsa make great X pipes for the C7's. Let me know if you want a price on parts or install as we are in DE.
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Old Dec 8, 2019 | 09:07 AM
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It was the first mod i did. I did it for sound, didn't care if i did or did not gain any power.

The sound alone is worth the cost of the xpipe. I went with borla. It should have came like this from the factory.
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Old Dec 8, 2019 | 02:20 PM
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How much louder is it?
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Old Dec 8, 2019 | 02:45 PM
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Originally Posted by Skypilot797
Shows several with dyno results.

https://www.youtube.com/watch?v=-8l27NfE2-k

Best. Tom.
Thanx greatly for this post. Very interesting results, for the money it looks like a Borla X pipe (which by itself logs slightly rich) with an intake (which should get a near perfect AF mixture) would get you well over 600 WHP for pocket change. The akra ti AB exhausts are very high quality (though as an AE I would prefer Inconel if I was spending a boat load of money on the metallurgy) and their design obviously works but is also quite pricey.

Last edited by usrodeo4; Dec 8, 2019 at 02:46 PM.
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Old Dec 8, 2019 | 03:14 PM
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Originally Posted by Dr.Ron
How much louder is it?
It's not any louder under low throttle at WOT it's definitely louder since the x pipe I have removed the secondary cats but it's not crazy loud
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Old Dec 8, 2019 | 03:16 PM
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You will have to find someone with the 60547 Borla X wanting to sell, they don't make it anymore. Don't make a mistake and order the 60548 as it attaches to the factory cats. There are several other choices some will have the double x and all are 3" as far as I know. I believe the AWE has a single x like the Borla. This one is the least expensive but I know nothing about it; https://www.edgyvette.com/product/ed...ss-steel-xpipe

I'd say it's 15-20% louder with the cats removed, no drone. I would do it.

Last edited by BearZ06; Dec 8, 2019 at 03:29 PM.
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Old Dec 8, 2019 | 04:01 PM
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Originally Posted by Dr.Ron
How much louder is it?
It's louder at cold start up, and at 50-100% throttle.

Everything else, seems "about the same". Warm idle etc, lightly accelerating through the gears.

The rev match, if you have a manual, with the xpipe is ADDICTING.

I mean addicting. It sounds better than my C6 that had long tubes with a full borla exhaust with no cats. It sounds better, and i think louder, than that.
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Old Dec 8, 2019 | 04:08 PM
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Have the Borla X, sound is great, not obnoxious, nice idle rumble, no drone, nice burbles on downshift, but open it up a bit, yeah buddy, that's it.
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Old Dec 8, 2019 | 04:36 PM
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Iv had the Borla for a while now and love it. If you’re able to find one used definitely go for it.
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Old Dec 8, 2019 | 05:12 PM
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Originally Posted by BearZ06
You will have to find someone with the 60547 Borla X wanting to sell, they don't make it anymore. Don't make a mistake and order the 60548 as it attaches to the factory cats. There are several other choices some will have the double x and all are 3" as far as I know. I believe the AWE has a single x like the Borla. This one is the least expensive but I know nothing about it; https://www.edgyvette.com/product/ed...ss-steel-xpipe

I'd say it's 15-20% louder with the cats removed, no drone. I would do it.
Now you tell me!!! My 60548 just arrived and I wanted to get rid of the secondary cats. What to do now? Weld two sections to cover where the cats are?

Last edited by BruZe06; Dec 8, 2019 at 05:13 PM.
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Old Dec 8, 2019 | 05:17 PM
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Definitely. I have one with the BMS, Mamo TB and love the Borla Xpipe. Couldn’t justify the cost of an after market intake without a tune and more boost.
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Old Dec 8, 2019 | 05:21 PM
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Originally Posted by BruZe06
Now you tell me!!! My 60548 just arrived and I wanted to get rid of the secondary cats. What to do now? Weld two sections to cover where the cats are?
Oh, too bad you didn't know that, the 547 eliminated the secondary cats, easy bolt on. That' why it was discontinued by Borla, didn't want any DOT or EPA headaches.
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Old Dec 8, 2019 | 05:21 PM
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Originally Posted by BruZe06
Now you tell me!!! My 60548 just arrived and I wanted to get rid of the secondary cats. What to do now? Weld two sections to cover where the cats are?
You could have done that with the GM pipe, I'd return it even though it will cost you the freight, I doubt you could sell it and be better off.
Gutting the cats is an option, I have seen it done with the the car on a lift and the front of the pipe loose and hanging down and rear still attached to hold it in place. It it a big job and a huge mess, need a good mask, I would never do it.

Last edited by BearZ06; Dec 8, 2019 at 07:18 PM.
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Old Dec 8, 2019 | 05:25 PM
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I have seen this done, gut the secondary cats, leave no pieces to break off, you will get a louder sound, but that is a PITA to do.
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Old Dec 8, 2019 | 08:33 PM
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I wouldn't mind it a little louder, but not crazy loud!
From the videos posted it doesn't seem crazy louder though.
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