Aftermarket Header Question - Page 2 - ZR-1 Net Registry Forums

rkreigh · 12-23-2015

Haibeck should love u for changing your mind, each time you do he gets paid.

I don't know that the high flow cats affect sound much at all. the LSV "ate the centers out" and last time I pulled the exh we finished the job and hollowed out the "cat shells"

didn't really notice it get much louder at all which surprised me.

but I agree with Bob, a nice "reasonable" system with cut outs for those times you want to let the mighty lion roar is best of both worlds

I'm sticking with my B&B with x pipe and "cat shells" for now. I'm thinking about putting a c6 "flapper tip" on the exhaust and upgrading to a less restrictive muffler (2nd gen B&B is more quiet, but at a restriction "cost") for so far the throaty sound all the time and spending less $$$ has won out.

WARP TEN · 12-24-2015

Quote:

Originally Posted by rkreigh

Haibeck should love u for changing your mind, each time you do he gets paid.

I don't know that the high flow cats affect sound much at all. the LSV "ate the centers out" and last time I pulled the exh we finished the job and hollowed out the "cat shells"

didn't really notice it get much louder at all which surprised me.

but I agree with Bob, a nice "reasonable" system with cut outs for those times you want to let the mighty lion roar is best of both worlds

I'm sticking with my B&B with x pipe and "cat shells" for now. I'm thinking about putting a c6 "flapper tip" on the exhaust and upgrading to a less restrictive muffler (2nd gen B&B is more quiet, but at a restriction "cost") for so far the throaty sound all the time and spending less $$$ has won out.

Yes Marc loves me now but in my youth I used to do all the exhaust system changes myself. Spent a lot of time on my back under the car on jack stands. Lots of great memories. One time when I was having a particularly hard time getting a Borla to fit together, my then high school age daughter studying in the room above the garage called my wife in and said, "Mom, you should hear what dad is saying!" Never used a Borla again and did my best to explain to said daughter that I would never use such words in public but I thought no one could hear me. But you are right my current system is one way to get the "best of both worlds" in terms of sound and performance.--Bob

RICKYRJ1 · 12-24-2015

I like the the cut out option QTP & Dougs make a nice set. The QTP has a system with a remote control

Gunny · 12-24-2015

time to chime in ...

after talking w/Warp Ten as well as listening to his setup I decided to go that route. Since I bought the 90 over 10 years ago I've been searching for the "perfect" exhaust (for me) and, through the years, have run the OEM, Borlas (two times), Corsa, and 95 OEM, some w/cats, some w/out, some w/OEM manifolds/cats, some w/SW headers. Some would be "perfect" in certain ways but not quite in other ways. And on and on. My exhaust for the past 2 years has been a 96 LT4 system, SW headers and no cats. I swore I was through modding/experimenting until I heard Bob's setup. Added QTP cutouts in late summer and drove the Z to Haibeck in late September for some additional porting, secondary deletion, and his tuning magic. Wow, what a difference !!! Marc dynoed with cutouts closed and open ... the difference is 15HP at the wheels and the sound difference is quite incredible. Best of all, you can "tune" the sound to your taste by opening the cutouts only as much as wanted. This is probably as "perfect" an exhaust (for me) that I will ever have on my Z.

edram454 · 12-27-2015

i have drm long tube headers and corsa exhaust with no cats. great sound. tons of sound wot and not bad on the street either. no drone what so ever. best free flowing exhaust that I can think of other than zoomies.

ed ramos #3028

MuRCieLaGo · 12-28-2015

Is there a difference performance-wise between Stainless Works headers catted and non-catted?

mike100 · 12-28-2015

Quote:

Originally Posted by MuRCieLaGo

Is there a difference performance-wise between Stainless Works headers catted and non-catted?

I don't have dyno testing to prove it, but I think the HP loss is all in the mufflers. My car was faster with the Stainless Works full cat-back running 3" catalysts than the car was with no cats and stock mufflers. both situations had long tube watson headers.

Johnny5 · 01-07-2016

Quote:

Originally Posted by MuRCieLaGo

Is there a difference performance-wise between Stainless Works headers catted and non-catted?

I believe Marc Heibeck said the difference is about 3HP without cats

Johnny5 · 01-07-2016

If anyone can PM me a sound clip or PM me and send me cell phone a clip Id love to hear SW with Cats to corsa cat back. I have clips of my corsa and play it everytime i get separation anxiety. I love the sound and don;t want to change that if i don't enjoy the header loudness for an additional 22 HP.

We Gone · 01-07-2016

I have SW long tube headers, when I first put them on it was without cats. It is loud and had a very tinny sound that I did not like... So I put the hi-flow cats on and it now sounds great. I could not tell any difference in power but I don't drive that hard.

With cats

https://www.youtube.com/watch?v=delqgeptb2A

12-23-2015	#11
rkreigh Join Date: Jan 2004 Location: Alex VA Posts: 1,080	Re: Aftermarket Header Question Haibeck should love u for changing your mind, each time you do he gets paid. I don't know that the high flow cats affect sound much at all. the LSV "ate the centers out" and last time I pulled the exh we finished the job and hollowed out the "cat shells" didn't really notice it get much louder at all which surprised me. but I agree with Bob, a nice "reasonable" system with cut outs for those times you want to let the mighty lion roar is best of both worlds I'm sticking with my B&B with x pipe and "cat shells" for now. I'm thinking about putting a c6 "flapper tip" on the exhaust and upgrading to a less restrictive muffler (2nd gen B&B is more quiet, but at a restriction "cost") for so far the throaty sound all the time and spending less $$$ has won out.

12-24-2015	#13
RICKYRJ1 Join Date: Dec 2005 Location: Tinton Falls, NJ Posts: 1,169	Re: Aftermarket Header Question I like the the cut out option QTP & Dougs make a nice set. The QTP has a system with a remote control

12-24-2015	#14
Gunny Join Date: May 2005 Location: Georgia Mountains Posts: 918	Re: Aftermarket Header Question time to chime in ... after talking w/Warp Ten as well as listening to his setup I decided to go that route. Since I bought the 90 over 10 years ago I've been searching for the "perfect" exhaust (for me) and, through the years, have run the OEM, Borlas (two times), Corsa, and 95 OEM, some w/cats, some w/out, some w/OEM manifolds/cats, some w/SW headers. Some would be "perfect" in certain ways but not quite in other ways. And on and on. My exhaust for the past 2 years has been a 96 LT4 system, SW headers and no cats. I swore I was through modding/experimenting until I heard Bob's setup. Added QTP cutouts in late summer and drove the Z to Haibeck in late September for some additional porting, secondary deletion, and his tuning magic. Wow, what a difference !!! Marc dynoed with cutouts closed and open ... the difference is 15HP at the wheels and the sound difference is quite incredible. Best of all, you can "tune" the sound to your taste by opening the cutouts only as much as wanted. This is probably as "perfect" an exhaust (for me) that I will ever have on my Z.

12-27-2015	#15
edram454 Join Date: Nov 2013 Location: .. Posts: 693	Re: Aftermarket Header Question i have drm long tube headers and corsa exhaust with no cats. great sound. tons of sound wot and not bad on the street either. no drone what so ever. best free flowing exhaust that I can think of other than zoomies. ed ramos #3028

12-28-2015	#16
MuRCieLaGo Join Date: Aug 2014 Location: Trois-Rivieres (QC) Posts: 473	Re: Aftermarket Header Question Is there a difference performance-wise between Stainless Works headers catted and non-catted?

01-07-2016	#19
Johnny5 Join Date: Nov 2014 Location: New Jersey Posts: 361	Re: Aftermarket Header Question If anyone can PM me a sound clip or PM me and send me cell phone a clip Id love to hear SW with Cats to corsa cat back. I have clips of my corsa and play it everytime i get separation anxiety. I love the sound and don;t want to change that if i don't enjoy the header loudness for an additional 22 HP.

01-07-2016	#20
We Gone Join Date: Apr 2004 Location: Atlanta, GA Posts: 2,169	Re: Aftermarket Header Question I have SW long tube headers, when I first put them on it was without cats. It is loud and had a very tinny sound that I did not like... So I put the hi-flow cats on and it now sounds great. I could not tell any difference in power but I don't drive that hard. With cats https://www.youtube.com/watch?v=delqgeptb2A __________________ 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 Last edited by We Gone; 01-07-2016 at 10:04 AM.