Does the OBX Catback Drone? - Page 3 - ZR-1 Net Registry Forums

RichS · 11-17-2017

If I could figure out how to post a video I have one on the dyno. It is much deeper sounding then the Corsa. I had a Corsa on the GS with the 396, longtubes and no cats. It was too loud and barely passed the noise limit at Englishtown,

XfireZ51 · 11-17-2017

Rich,

I could see the vid w the link u posted earlier. Noticed a puff of smoke when u backed off. Have u noticed any oil consumption on your part?

RichS · 11-17-2017

https://youtu.be/CMeKDe1cQqE

Dominic, I think this was one of the earlier runs before leaning it out a bit, But no I have no noticed any oil usage at this time.

-=Jeff=- · 11-17-2017

Rich,

Can you hear differences in Drone level between the 2?

RichS · 11-17-2017

Jeff, I don't notice any drone. I was really surprised how quiet is is and that there is no drone. Maybe the fake cats that look like mini glasspacks on the headers quiet it down a little before it hits the mufflers? I'm sure it gives up a few HP compared to the Corsa or others, but for the price I'm fine with it. I paid under $900 for both (headers and catback)on sale last year on E-bay. The Power Effects that was on it when I bought it had terrible drone. That was with the stock manifolds and cats,

I now have the Magnaflow 3" system on the GS with longtubes and no cats. It has some drone and a mean growl to it, I have a 700R4 with 3.73 so the rpms are higher to keep it out of the annoying drone rpm most of the time.

I also have a magnaflow on the Lightning that sounds great with no drone. It has a very short exhaust with the side discharge out the passenger side just behind the door. Although my wife says its loud on her side when I'm driving.

XfireZ51 · 11-17-2017

Rich,

Did u mention if u had an X pipe?

RichS · 11-17-2017

It has a "H" pipe right after the resonator. If you look it up on Ebay you can see it. It is all 2 1/2" pipe.

-=Jeff=- · 11-17-2017

Looks just like the Corsa

Sent from my iPhone using ZR-1 Net Registry

Black Red '90 · 07-08-2020

I just purchased an OBX exhaust. I knew from this and other forums that the clamps wouldn't be quality. The 2.5" clamps don't come close to properly securing due to the lap joints, nor was a clamp included for the passenger side pipe to header. What 3rd party clamps did everyone purchase? Did you stick with band clamps or use lap joint clamps ?

Thanks

Ccmano · 07-09-2020

Quote:

Originally Posted by Black Red '90

I just purchased an OBX exhaust. I knew from this and other forums that the clamps wouldn't be quality. The 2.5" clamps don't come close to properly securing due to the lap joints, nor was a clamp included for the passenger side pipe to header. What 3rd party clamps did everyone purchase? Did you stick with band clamps or use lap joint clamps ?

Thanks

Lap joint clamps work best.
H

11-17-2017	#21
RichS Join Date: Nov 2013 Location: Wilkes-Barre, PA Posts: 148	Re: Does the OBX Catback Drone? If I could figure out how to post a video I have one on the dyno. It is much deeper sounding then the Corsa. I had a Corsa on the GS with the 396, longtubes and no cats. It was too loud and barely passed the noise limit at Englishtown, __________________ 1994 ZR-1 #198, sold [img]https://live.staticflickr.com/65535/48400173802_2a6f122cfb_n.jpg[/IMG] [COLOR=RoyalBlue]96 GrandSport#857[/COLOR],[COLOR=Red]Red Gut[/COLOR] 397 LT4, AFR heads,3:90 gears, DRM longtubes, Sepanek 700R4, Yank 3600, bla-bla... Best ET w/396 & 6-speed 11.02 @126.57 w/1.60 60' Best ET w/396 & 700r4 10.82 @124.87 w/1.48 60' 2003 DarkShadowGray Ford Lightning 460rwhp/550rwtq 12.11 @112.18 w/1.71 60'

11-17-2017	#22
XfireZ51 Join Date: May 2007 Location: Chicagoland, IL Posts: 9,708	Re: Does the OBX Catback Drone? Rich, I could see the vid w the link u posted earlier. Noticed a puff of smoke when u backed off. Have u noticed any oil consumption on your part? __________________ [SIGPIC][/SIGPIC]Former Membership Chairman Former ZR-1 Registry - BOD 1972 Corvette 4speed base Coupe SOLD long time ago 1984 Corvette Z-51/4+3 SOLD 1992 Corvette ZR-1 Aqua/Gray #474 SOLD 1992 Corvette ZR-1 Black Rose/Cognac #458 2014 Honda VFR Interceptor DX

11-17-2017	#23
RichS Join Date: Nov 2013 Location: Wilkes-Barre, PA Posts: 148	Re: Does the OBX Catback Drone? https://youtu.be/CMeKDe1cQqE Dominic, I think this was one of the earlier runs before leaning it out a bit, But no I have no noticed any oil usage at this time. Last edited by RichS; 11-17-2017 at 11:31 AM.

11-17-2017	#24
-=Jeff=- Join Date: Jul 2007 Location: Bartlett, IL Posts: 7,169	Re: Does the OBX Catback Drone? Rich, Can you hear differences in Drone level between the 2? __________________ 1990 Corvette ZR-1 #1051 Watson Headers (2" Primary) - Flowmaster Cats - Borla Catback Late Model IH - Plenum Coilovers - 4.10s Custom Interior NCM Lifetime Member #978

11-17-2017	#25
RichS Join Date: Nov 2013 Location: Wilkes-Barre, PA Posts: 148	Re: Does the OBX Catback Drone? Jeff, I don't notice any drone. I was really surprised how quiet is is and that there is no drone. Maybe the fake cats that look like mini glasspacks on the headers quiet it down a little before it hits the mufflers? I'm sure it gives up a few HP compared to the Corsa or others, but for the price I'm fine with it. I paid under $900 for both (headers and catback)on sale last year on E-bay. The Power Effects that was on it when I bought it had terrible drone. That was with the stock manifolds and cats, I now have the Magnaflow 3" system on the GS with longtubes and no cats. It has some drone and a mean growl to it, I have a 700R4 with 3.73 so the rpms are higher to keep it out of the annoying drone rpm most of the time. I also have a magnaflow on the Lightning that sounds great with no drone. It has a very short exhaust with the side discharge out the passenger side just behind the door. Although my wife says its loud on her side when I'm driving.

11-17-2017	#27
RichS Join Date: Nov 2013 Location: Wilkes-Barre, PA Posts: 148	Re: Does the OBX Catback Drone? It has a "H" pipe right after the resonator. If you look it up on Ebay you can see it. It is all 2 1/2" pipe.

11-17-2017	#28
-=Jeff=- Join Date: Jul 2007 Location: Bartlett, IL Posts: 7,169	Re: Does the OBX Catback Drone? Looks just like the Corsa Sent from my iPhone using ZR-1 Net Registry __________________ 1990 Corvette ZR-1 #1051 Watson Headers (2" Primary) - Flowmaster Cats - Borla Catback Late Model IH - Plenum Coilovers - 4.10s Custom Interior NCM Lifetime Member #978

07-08-2020	#29
Black Red '90 Join Date: May 2018 Location: Virginia Posts: 79	Re: Does the OBX Catback Drone? I just purchased an OBX exhaust. I knew from this and other forums that the clamps wouldn't be quality. The 2.5" clamps don't come close to properly securing due to the lap joints, nor was a clamp included for the passenger side pipe to header. What 3rd party clamps did everyone purchase? Did you stick with band clamps or use lap joint clamps ? Thanks