Corsa X-Pipe - Page 3 - ZR-1 Net Registry Forums

tf95ZR1 · 02-26-2020

Sorry Gents, I should have been more clear in my post #2.
I don't think my 25 HP gain was necessarily from the B&B
X-pipe, but more from removing the Borla resonator.
Mark H agrees that it's a HP robber.

Why I didn't just go with straight pipes? I believe the X-pipe
cancels out some of the sound waves and if it is straight
enough, doesn't restrict the exhaust very much. I do not
have any straight vrs. X-pipe HP (or sound) data for my system.

max76 · 02-27-2020

In my 90 zr1 i have a B&B 3" exhaust, i hand made a steel H pipe...now i have the correct sound i like...Yes at 1800/2000 rpm i have little drone....but at idle it's very very nice

We Gone · 02-27-2020

Pete, Not trying to get to far off track just understand how the gains in HP are so great.

Great information, it leads me to a couple of other questions regarding exhaust systems.

1. Is the gain in HP also a result of the 3" pipes over the Corsa 2.5"

2. How does the pipe diameter effect HP & torque. I always thought as the diameter of the pipes went up you could stand a chance to lose torque, or the gains were only HP with no = gain in torque.

Thanks.

Pete · 02-27-2020

The Corsa muffler has 1 outlet at the muffler 2 1/4".

Need to have correct size for the maximum performance across the board.
Some do not choose exhaust for max performance but rather for sound.

https://www.youtube.com/watch?v=O1bXPNy1Yn4

Pete

Quote:

Originally Posted by We Gone

Pete, Not trying to get to far off track just understand how the gains in HP are so great.

Great information, it leads me to a couple of other questions regarding exhaust systems.

1. Is the gain in HP also a result of the 3" pipes over the Corsa 2.5"

2. How does the pipe diameter effect HP & torque. I always thought as the diameter of the pipes went up you could stand a chance to lose torque, or the gains were only HP with no = gain in torque.

Thanks.

Jagdpanzer · 02-28-2020

Which exhaust system available in today market has the highest flow capacity, with and without cutouts? I have a 2.5” Corsa system on now behind the 427 but the beast wants more flow capacity. Are there any high flowing 3” systems out there that are drone free at cruising speed like the Corsa system?

Sent from my iPhone using ZR-1 Net Registry

HAWAIIZR-1 · 02-28-2020

Quote:

Originally Posted by Jagdpanzer

Which exhaust system available in today market has the highest flow capacity, with and without cutouts? I have a 2.5” Corsa system on now behind the 427 but the beast wants more flow capacity. Are there any high flowing 3” systems out there that are drone free at cruising speed like the Corsa system?

Sent from my iPhone using ZR-1 Net Registry

Hey Phil,

I’m not sure, but I thought only the BBE Fusion? I know a couple folks here have it and hopefully will chime in. If I were in the market this is the one I would buy.

https://www.bbexhaust.com/shop/chevy...ust-fcor-0011/

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Top Toy · 03-01-2020

Latest version of the B&B Fusions are mimimum back pressure, terrific sound and no drone. Love 'em!

Sent from my SM-G975U1 using ZR-1 Net Registry mobile app

Karl · 03-02-2020

2.5" vs 3.0" exhaust on the Dyno.

https://youtu.be/_PVXvHkr-Vs

Mystic ZR-1 · 03-02-2020

That’s on a 454, how about a 350, less volume to start with?

Jagdpanzer · 03-02-2020

Thanks Guys
I’ll look into the BBE Fusions

02-26-2020	#21
tf95ZR1 Join Date: Aug 2005 Location: Northridge, CA Posts: 1,445	Re: Corsa X-Pipe Sorry Gents, I should have been more clear in my post #2. I don't think my 25 HP gain was necessarily from the B&B X-pipe, but more from removing the Borla resonator. Mark H agrees that it's a HP robber. Why I didn't just go with straight pipes? I believe the X-pipe cancels out some of the sound waves and if it is straight enough, doesn't restrict the exhaust very much. I do not have any straight vrs. X-pipe HP (or sound) data for my system. Last edited by tf95ZR1; 02-26-2020 at 11:57 PM. Reason: Wanted 2

02-27-2020	#22
max76 Join Date: Apr 2009 Location: ITALY Posts: 264	Re: Corsa X-Pipe In my 90 zr1 i have a B&B 3" exhaust, i hand made a steel H pipe...now i have the correct sound i like...Yes at 1800/2000 rpm i have little drone....but at idle it's very very nice

02-27-2020	#23
We Gone Join Date: Apr 2004 Location: ATL. GA. Posts: 2,163	Re: Corsa X-Pipe Pete, Not trying to get to far off track just understand how the gains in HP are so great. Great information, it leads me to a couple of other questions regarding exhaust systems. 1. Is the gain in HP also a result of the 3" pipes over the Corsa 2.5" 2. How does the pipe diameter effect HP & torque. I always thought as the diameter of the pipes went up you could stand a chance to lose torque, or the gains were only HP with no = gain in torque. Thanks. __________________ Steve 1990 Steel Blue/Black #2355 1990 Red/Red #1473 1991 Quasar /Black #118 Sold 1991 Turquoise/Black #766 Parted Out 1993 Yellow/White #179 Sold 1990 Black/Gray #1361 Headers/4:10s Sold

02-28-2020	#25
Jagdpanzer Join Date: Apr 2007 Location: Northern VA Posts: 2,647	Re: Corsa X-Pipe Which exhaust system available in today market has the highest flow capacity, with and without cutouts? I have a 2.5” Corsa system on now behind the 427 but the beast wants more flow capacity. Are there any high flowing 3” systems out there that are drone free at cruising speed like the Corsa system? Sent from my iPhone using ZR-1 Net Registry __________________ Phil Wasinger 1994 Torch Red ZR-1 WAZOO Member George Braml Intake

03-01-2020	#27
Top Toy Join Date: Jul 2012 Location: Allentown, PA Posts: 309	Re: Corsa X-Pipe Latest version of the B&B Fusions are mimimum back pressure, terrific sound and no drone. Love 'em! Sent from my SM-G975U1 using ZR-1 Net Registry mobile app __________________ '95 ZR-1, aqua/gray, #167 368 LPE/Haibeck, Web cams, Stainless Works headers, B&B Fusion exhaust, 18" Fikse wheels, Alcon brakes, lowered. 491 SAE RWHP.

03-02-2020	#28
Karl Join Date: May 2013 Location: Chicago Posts: 977	Re: Corsa X-Pipe 2.5" vs 3.0" exhaust on the Dyno. https://youtu.be/_PVXvHkr-Vs __________________ 1993 ZR-1 #211 Yellow On Beige Beast #2 1992 ZR-1 #427 Black On Black Sold 1985 L98 Blue On Blue Sold

03-02-2020	#29
Mystic ZR-1 Join Date: Jan 2010 Location: Mystic CT Posts: 2,604	Re: Corsa X-Pipe That’s on a 454, how about a 350, less volume to start with?

03-02-2020	#30
Jagdpanzer Join Date: Apr 2007 Location: Northern VA Posts: 2,647	Re: Corsa X-Pipe Thanks Guys I’ll look into the BBE Fusions __________________ Phil Wasinger 1994 Torch Red ZR-1 WAZOO Member George Braml Intake