Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums - Camaro5.com
 
JUICEDMOTORSPORTS
Go Back   Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums - Camaro5.com > Engine | Drivetrain | Powertrain Technical Discussions > Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons


Reply
 
Thread Tools
Old 11-22-2010, 11:11 PM   #1
Rico
Flying da helicopter
 
Rico's Avatar
 
Drives: Black SS/RS
Join Date: Oct 2009
Location: TX/TN
Posts: 1,157
Short Headers?

I am looking to buy intake, headers, and exhaust. I already know what exhaust (borla atak) and intake (K&N) I want, but is it worth the money to buy short headers or will that be a waste of money for minimal gains? Opinions are welcome. I would go long tube with high flow cats, but don't want to void any warranty right now. I was looking at buying the Doug Thorley short headers (which I heard were good), but again will that be worth the $500 I have to pay for them? Thanks in advance for the help.
Rico is offline   Reply With Quote
Old 11-23-2010, 12:58 AM   #2
v6sonoma


 
v6sonoma's Avatar
 
Drives: 2010 SS RS
Join Date: Jun 2009
Location: Providence, RI
Posts: 8,078
While 99% of the people out there will club you to death over them saying how much better Longtubes are some of them do give you gains and they don't require a tune. LT's will give you 3-4 times the increase but will 99% of the time require a tune. So if you can't tune it then the shorties are worth the money. If you could care less about tuning them Longtubes are the only way to go.
__________________

Mods: BBK Intake, BBK LT's and High Flow Cats, Corsa Cat-back exhaust, Hurst short throw shifter, SLP skip-shift eliminator.

7/1/09 Placed order for IOM/IO int/ SS/RS 6M
9/26/09 Took delivery!
v6sonoma is offline   Reply With Quote
Old 11-23-2010, 12:59 AM   #3
Ivan @ Southwest Speed
 
Ivan @ Southwest Speed's Avatar
 
Drives: '15 Z06, '01 NBM SS, '97 SS
Join Date: May 2009
Location: Rio Rancho, NM
Posts: 12,194
Quote:
Originally Posted by Rico View Post
I am looking to buy intake, headers, and exhaust. I already know what exhaust (borla atak) and intake (K&N) I want, but is it worth the money to buy short headers or will that be a waste of money for minimal gains? Opinions are welcome. I would go long tube with high flow cats, but don't want to void any warranty right now. I was looking at buying the Doug Thorley short headers (which I heard were good), but again will that be worth the $500 I have to pay for them? Thanks in advance for the help.
If going the Shorty route, there is no substitute. The Doug Thorley's are the best. Period.

You can add Hi Flows to them to see some really nice gains as well.

Quote:
Originally Posted by Mibadd View Post
I picked up a brand new set of D.T. Shorty Headers that was on sale for $400.00 shipped , it was well worth it ! !
If you decide to go that route , you will not regret it ! !
Right on!! Deal like all get out!

Touch bases with us if you have any more questions or are ready for the next level.


Ivan @ Southwest Speed
Ivan @ Southwest Speed is offline   Reply With Quote
Old 11-23-2010, 10:45 AM   #4
Apex Motorsports
 
Apex Motorsports's Avatar
 
Drives: 2000 Camaro SS
Join Date: Feb 2010
Location: Louisville, Ky.
Posts: 25,211
Quote:
Originally Posted by Rico View Post
I am looking to buy intake, headers, and exhaust. I already know what exhaust (borla atak) and intake (K&N) I want, but is it worth the money to buy short headers or will that be a waste of money for minimal gains? Opinions are welcome. I would go long tube with high flow cats, but don't want to void any warranty right now. I was looking at buying the Doug Thorley short headers (which I heard were good), but again will that be worth the $500 I have to pay for them? Thanks in advance for the help.
If you are going to do headers long tubes are the way to go. That being said, if you are looking at short tubes then Thorleys are the only option. Keep in mind that headers with the ATAK is going to be LOUD.
Apex Motorsports is offline   Reply With Quote
Old 11-23-2010, 10:45 AM   #5
2010 4 DW
Account Suspended
 
Drives: White 2010 RS/SS
Join Date: Dec 2009
Location: San Diego
Posts: 674
Quote:
Originally Posted by Rico View Post
I am looking to buy intake, headers, and exhaust. I already know what exhaust (borla atak) and intake (K&N) I want, but is it worth the money to buy short headers or will that be a waste of money for minimal gains? Opinions are welcome. I would go long tube with high flow cats, but don't want to void any warranty right now. I was looking at buying the Doug Thorley short headers (which I heard were good), but again will that be worth the $500 I have to pay for them? Thanks in advance for the help.
I would just get the JBA Mid-pipes vs the shorty headers. The mids make 15-20rwhp and the shorty headers make like 10hp.
2010 4 DW is offline   Reply With Quote
Old 11-23-2010, 11:26 AM   #6
y2k king

 
y2k king's Avatar
 
Drives: 2011 ss camaro
Join Date: Aug 2010
Location: spring hill, fl
Posts: 1,713
Quote:
Originally Posted by Ivan @ Southwest Speed View Post
If going the Shorty route, there is no substitute. The Doug Thorley's are the best. Period.

You can add Hi Flows to them to see some really nice gains as well.



Right on!! Deal like all get out!

Touch bases with us if you have any more questions or are ready for the next level.


Ivan @ Southwest Speed
if ya add hi flows, will ya get a cel?
__________________
10/28/2010 got it
y2k king is offline   Reply With Quote
Old 11-23-2010, 11:31 AM   #7
y2k king

 
y2k king's Avatar
 
Drives: 2011 ss camaro
Join Date: Aug 2010
Location: spring hill, fl
Posts: 1,713
i'm ordering a set of dt shortys today. i've got the c.a.i. intake and corsa catbacks installed and i don't want to kill my warranty til i've had her at least a year.
__________________
10/28/2010 got it
y2k king is offline   Reply With Quote
Old 11-23-2010, 11:51 AM   #8
ssmike
Missing Big Red
 
ssmike's Avatar
 
Drives: 2006 Corvette DSOM, '13 Equinox CRT
Join Date: Jul 2009
Location: Buffalo, NY
Posts: 6,540
I've had a set of DT shorties for about a year now and I love them! When I installed them I didn't really notice much in the way of performance, maybe a little low end torque, but I love the looks & quality. The most bang for my buck was when I added the Solo Performance high flow cats a few months ago! Shorties and cat back exhaust really don't do much for performance, it's the cats that will really make the difference! My Solo's haven't set off a CEL yet and Solo says they won't because the position of the first O2 sensor doesn't change from the stock position. If you like it LOUD the high flows really bang out a bark! I had to add resonators to calm it down a bit and keep the neighbors happy. It sounds REALLY good now!

With all this said, if the high flow cats came out last year when I did the DT shorties and cat back exhaust, I would have left the stock manifolds and stock exhaust on and just did the high flow cats! Would have saved me a lot of money!

In conclusion, I like my DT's for their looks and I love the sound of my Solo Mach-X cat back, so I'm happy. Performance wise I love the Solo high flow cats! SO, it depends on what you're looking for, performance, sound, or looks. The DT's will give great under hood looks (and a small bump in power), the cat back will give you the sound you want, and high flow cats will be the performance blockbuster of the 3! And the great part is, NO TUNE REQUIRED for this set-up!

Sorry for rambling, hope this helps! Oh, and before anyone asks, no I didn't do any dyno or track runs, just SOP!
__________________

Not a Camaro but it works for now!

Last edited by ssmike; 11-23-2010 at 12:02 PM.
ssmike is offline   Reply With Quote
Old 11-23-2010, 12:46 PM   #9
OUTATIME
 
OUTATIME's Avatar
 
Drives: 2010 IOM 2SS/RS
Join Date: Oct 2008
Location: NJ
Posts: 625
Is there any real difference in sound with Shorties? I've heard longtubes but I can't really figure out if there is a difference . . .
OUTATIME is offline   Reply With Quote
Old 11-23-2010, 02:38 PM   #10
mikeSS


 
mikeSS's Avatar
 
Drives: 2015 c7
Join Date: Nov 2009
Location: MI
Posts: 7,453
Quote:
Originally Posted by OUTATIME View Post
Is there any real difference in sound with Shorties? I've heard longtubes but I can't really figure out if there is a difference . . .
yes theres a big differences in sound..
__________________
2010 camaro cammed- sold
2015 C7 Z51- current
mikeSS is offline   Reply With Quote
Old 11-23-2010, 02:45 PM   #11
Entaille

 
Drives: 2011 Camaro 2SS/RS
Join Date: Aug 2010
Location: Everett
Posts: 995
most people state they cant really hear a difference
__________________

Entaille is offline   Reply With Quote
Old 11-23-2010, 02:55 PM   #12
ssmike
Missing Big Red
 
ssmike's Avatar
 
Drives: 2006 Corvette DSOM, '13 Equinox CRT
Join Date: Jul 2009
Location: Buffalo, NY
Posts: 6,540
When I installed my DT's I already had my cat back system on. I really didn't notice much of a difference in sound with adding the DT's. Again, the big obstruction to flow and sound are the cats! Change nothing else but put high flow cats on and you get increased power and sound, best bang for the buck in performance!
__________________

Not a Camaro but it works for now!
ssmike is offline   Reply With Quote
Old 11-23-2010, 03:09 PM   #13
mikeSS


 
mikeSS's Avatar
 
Drives: 2015 c7
Join Date: Nov 2009
Location: MI
Posts: 7,453
Quote:
Originally Posted by Entaille View Post
most people state they cant really hear a difference
trust me LTs are louder then shortys , main reason is the cats
__________________
2010 camaro cammed- sold
2015 C7 Z51- current
mikeSS is offline   Reply With Quote
Old 11-23-2010, 04:10 PM   #14
cab2g
love. my. car.
 
cab2g's Avatar
 
Drives: 2011 2SS/RS
Join Date: Jul 2009
Location: Chicago
Posts: 3,372
[
Quote:
Originally Posted by y2k king View Post
if ya add hi flows, will ya get a cel?
most likely as it will change the amount of oxygen that will be sensed by the O2 sensors after the cats. It has a range of expected values and high flow cats release more O2 (meaning less O2 was used to bond with toxic chemicals in the catalytic conversion) than the stock cats.

From what I learned the high flow cats aren't as good at converting the toxic chemicals into non-toxic variants...

Quote:
Originally Posted by http://www.aa1car.com/library/o2sensor.htm
The OBD II system monitors converter efficiency by comparing the upstream and downstream oxygen sensor signals. If the converter is doing its job and is reducing the pollutants in the exhaust, the downstream oxygen sensor should show little activity (few lean-to-rich transitions, which are also called "crosscounts"). The sensor's voltage reading should also be fairly steady (not changing up or down), and average 0.45 volts or higher.

If the signal from the downstream oxygen sensor starts to mirror that from the upstream oxygen sensor(s), it means converter efficiency has dropped off and the converter isn't cleaning up the pollutants in the exhaust. The threshold for setting a diagnostic trouble code (DTC) and turning on the Malfunction Indicator Lamp (MIL) is when emissions are estimated to exceed federal limits by 1.5 times. See Troubleshooting a P0420 Catalyst Code for more info about converter problems.

If converter efficiency had declined to the point where the vehicle may be exceeding the pollution limit, the PCM will turn on the Malfunction Indicator Lamp (MIL) and set a diagnostic trouble code. At that point, additional diagnosis may be needed to confirm the failing converter. If the upstream and downstream O2 sensors are functioning properly and show a drop off in converter efficiency, the converter must be replaced to restore emissions compliance. The vehicle will not pass an OBD II emissions test if there are any converter codes in the PCM.
__________________
cab2g is offline   Reply With Quote
 
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
FS: Doug Thorley Short Tube Headers NIB sykb47l V8 - Engine, Exhaust, Bolt-Ons, Tuning Equipment 4 01-18-2010 07:25 PM
GMPP Airbox, short headers, and exhaust Lee9710 Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons 1 08-06-2009 12:34 PM


All times are GMT -5. The time now is 08:27 AM.


Powered by vBulletin® Version 3.8.9 Beta 4
Copyright ©2000 - 2016, vBulletin Solutions, Inc.