Camaro L99 American Racing Headers (Catted) system with stock exhaust = +42rwhp - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

pharmd · 06-26-2009, 08:29 AM

We dyno'd the SS last night after installing the American Racing (Catted) system with stock mufflers. For comparison, we used my BEST stock dyno run...I certainly "could" have picked my worst stock dyno to make the gains look better and if I were selling a product that probably would be smart, but I'm "keeping it real" so you know what it really did. (all numbers are SAE corrected, Same dyno for all pulls).

My best dyno stock was 321rwhp/332rwtq, by best with headers + tune was 350rwhp/370rwtq for gains of 29rwhp at peak/38rwtq at peak.

At its maximum gain over stock it picked up 42rwhp @ like 5300rpm and 42rwtq @ like 4200 rpm.

I will put some sounds clips up soon. It is as quiet as stock with the cruise set @ 80 mph, but it definitely wakes up at WOT.

On my auto we didn't see the 50rwhp/45rwtq that was claimed (which I assume was on a 6sp manual car). However, if you figure dyno variation, weather differences between stock and modded pulls, and the different amount of power gained between manual and auto, I think my numbers are in-line with the advertised claims.

ADDED: video of 0-60 run after mods:

Baughman · 06-26-2009, 08:37 AM

Well that should pick up your 1/4 mile times!!!

Verio · 06-26-2009, 08:58 AM

How much does something like this cost?

toehead93 · 06-26-2009, 02:16 PM

I'm not sure on the exact price but somewhere around $1850 + tune ($200-$400).

SGOS252382 · 06-26-2009, 02:22 PM

42 rwhp gain and you're still running the stock catback!
That's really good. I'm sure your car acts like a completely different animal now.
Very nice.

THE EVIL TW1N · 06-26-2009, 02:56 PM

Quote:

Originally Posted by SGOS252382

42 rwhp gain and you're still running the stock catback!
That's really good. I'm sure your car acts like a completely different animal now.
Very nice.

Reading the other threads, the stock catback isn't much of a restriction... or atleast on the M6's.

Crowley · 06-26-2009, 03:43 PM

Quote:

Originally Posted by THE EVIL TW1N

Reading the other threads, the stock catback isn't much of a restriction... or atleast on the M6's.

Id bet on at least 10rwhp or a little more for a good 3 inch catback/axelback

Crowley

pharmd · 06-26-2009, 03:47 PM

The axel back is the same on both M6 and A6...the difference is in the middle...their is a huge resonator on the A6 (to supress the sound of the AFM kicking in).

With TM gone from the Tranny and the headers on, it has certainly become a quicker ride. And now it sounds appropriate for what it is.

mike@newera · 06-26-2009, 04:24 PM

Nice gains, I will be putting the ARH system on my L99 in the next week or 2, I will be real happy with the same increase in power.

pharmd · 06-26-2009, 05:38 PM

Quote:

Originally Posted by mike@newera

Nice gains, I will be putting the ARH system on my L99 in the next week or 2, I will be real happy with the same increase in power.

Call you guys today to talk about a few things...really interested in your OTR intake...when will you be tracking the car again with the OTR installed?

Tom@ARH · 06-26-2009, 06:52 PM

Quote:

Originally Posted by Crowley

Id bet on at least 10rwhp or a little more for a good 3 inch catback/axelback

Crowley

I doubt it's even half that. We pulled the axleback off the G8 during testing and saw 3hp. You won't need a 3" catback till over 500rwhp

pharmd · 06-26-2009, 06:59 PM

Quote:

Originally Posted by Tom@ARH

I doubt it's even half that. We pulled the axleback off the G8 during testing and saw 3hp. You won't need a 3" catback till over 500rwhp

...in that case what catback do you suggest....

Tom@ARH · 06-26-2009, 07:08 PM

Honestly I don't really know what's available yet the car is still so new that I have'nt seen an aftermarket system up close yet everyone is still scrambling to get parts out. Ultimately it will more than likely be a Borla system or something custom fabbed with our mufflers if it were my personal car.

Mod007 · 06-26-2009, 07:36 PM

I just ordered my Corsa Catback (ships Monday!), after I buy my Vararam CAI, ARH are next on my list! Does anyone sell them without the cats and if so how much?

pharmd · 06-26-2009, 09:29 PM

^I'm sure Tom or Nick would hook you up with a catless setup...but I guess my question would be why would you want to...the high flow cats they use are a minimal hp robber and you can always run cutouts to gain that totally roudy sound everyone wants. With no cats, you will have to deal with the "gas" smell, fail emissions, and probably have some interior drone.

I'm just saying....I've been there on both my TA and TBSS and if you can get high flow cats that don't restrict on power, I'd personally rather run those, especially on something I'm gonna drive alot. If its just a weekend car for you, then I guess that may be a little different.

I've got a wife to deal with, so I don't have a choice.

A.R. Headers · 06-26-2009, 09:53 PM

Pharmd, Thanks for posting your results. 42RWHP gains is just great. Enjoy your ride this summer and thanks for choosing ARH.

Nick

Mod007 · 06-26-2009, 11:08 PM

Quote:

Originally Posted by pharmd

^I'm sure Tom or Nick would hook you up with a catless setup...but I guess my question would be why would you want to...the high flow cats they use are a minimal hp robber and you can always run cutouts to gain that totally roudy sound everyone wants. With no cats, you will have to deal with the "gas" smell, fail emissions, and probably have some interior drone.

I'm just saying....I've been there on both my TA and TBSS and if you can get high flow cats that don't restrict on power, I'd personally rather run those, especially on something I'm gonna drive alot. If its just a weekend car for you, then I guess that may be a little different.

I've got a wife to deal with, so I don't have a choice.

LOL I guess your kind of right I got a wife too and she hate's my 5.7 Charger with Zoomers.

ADM PERFORMANCE · 06-27-2009, 05:10 AM

Mike and Nick.....I told you we got this handeled!

At least in house for now.

pharmd · 06-27-2009, 06:22 AM

^Andy, do you have any sound clips of that....That's basically what I was thinking about, but it has to be a wife approved sound level so I need to hear it. The fit/finish is great as uaual from you guys!

benjj · 06-27-2009, 08:00 AM

agree, would like to hear what the ARH+magnaflows sounds like

vsgls1 · 06-27-2009, 08:36 AM

Good deal. Can't wait to get mine on.

ADM PERFORMANCE · 06-27-2009, 08:53 AM

Quote:

Originally Posted by pharmd

^Andy, do you have any sound clips of that....That's basically what I was thinking about, but it has to be a wife approved sound level so I need to hear it. The fit/finish is great as uaual from you guys!

Only our 427 video,I to will be making it wife friendly.

May also install the 3" dual in dual out up front...this is how I do the Vettes.

If you look at magnaflow production exhaust for the camaro you will see they do it this way as well.

Andy

Matt TuneTime · 06-27-2009, 08:54 AM

Quote:

Originally Posted by Crowley

Id bet on at least 10rwhp or a little more for a good 3 inch catback/axelback

Crowley

max 5 whp

Quote:

Originally Posted by Tom@ARH

I doubt it's even half that. We pulled the axleback off the G8 during testing and saw 3hp. You won't need a 3" catback till over 500rwhp

We have gone over 550whp with the g8 with stock axleback dropped it and picked up 7 whp ..

mike@newera · 06-27-2009, 02:10 PM

Quote:

Originally Posted by Matt TuneTime

max 5 whp

We have gone over 550whp with the g8 with stock axleback dropped it and picked up 7 whp ..

We had the exact same results with our project G8.

logan1080 · 06-28-2009, 10:23 AM

is this system availble without cats?

06-26-2009, 08:29 AM	#1
pharmd Master of Medicine Drives: 2012 VW GTI, 2007 TBSS, 2002 Camaro Join Date: Oct 2008 Location: Morehead, Kentucky Posts: 782	Camaro L99 American Racing Headers (Catted) system with stock exhaust = +42rwhp We dyno'd the SS last night after installing the American Racing (Catted) system with stock mufflers. For comparison, we used my BEST stock dyno run...I certainly "could" have picked my worst stock dyno to make the gains look better and if I were selling a product that probably would be smart, but I'm "keeping it real" so you know what it really did. (all numbers are SAE corrected, Same dyno for all pulls). My best dyno stock was 321rwhp/332rwtq, by best with headers + tune was 350rwhp/370rwtq for gains of 29rwhp at peak/38rwtq at peak. At its maximum gain over stock it picked up 42rwhp @ like 5300rpm and 42rwtq @ like 4200 rpm. I will put some sounds clips up soon. It is as quiet as stock with the cruise set @ 80 mph, but it definitely wakes up at WOT. On my auto we didn't see the 50rwhp/45rwtq that was claimed (which I assume was on a 6sp manual car). However, if you figure dyno variation, weather differences between stock and modded pulls, and the different amount of power gained between manual and auto, I think my numbers are in-line with the advertised claims. ADDED: video of 0-60 run after mods: __________________

06-26-2009, 08:37 AM	#2
Baughman Drives: Black 2SS/RS Join Date: Mar 2009 Location: Fort Worth, Texas Posts: 475	Well that should pick up your 1/4 mile times!!! __________________ Black/Black, 2SS/RS, Manual, and Polished 20's VIN# 28396

06-26-2009, 08:58 AM	#3
Verio Taking it 1 day at a time Drives: 2010 Chevy Camaro 2SS/RS Auto Join Date: Apr 2009 Location: San Antonio, TX Posts: 759 View My Garage	How much does something like this cost? __________________ Order#: NJWGTF 1100, Preliminary order accepted 04/27/2009 6000, Delivered to the customer 07/23/2009 - 3 Months (worth the wait!!)

06-26-2009, 02:16 PM	#4
toehead93 Drives: 2010 SS, 1993 Z28 Join Date: Feb 2007 Location: wpb fl Posts: 2,071 View My Garage	I'm not sure on the exact price but somewhere around $1850 + tune ($200-$400). __________________ 2SS A6 Black 360 RWHP/382 FTLBS - tune only Mods on: Dynatech LTs, Vararam Intake, Pedders Xa's, DiabloSport tuned

06-26-2009, 02:22 PM	#5
SGOS252382 Drives: 2010 Camaro 2SS/RS Join Date: Mar 2008 Location: S.W. Florida Posts: 6,004	42 rwhp gain and you're still running the stock catback! That's really good. I'm sure your car acts like a completely different animal now. Very nice. __________________

06-26-2009, 03:47 PM	#8
pharmd Master of Medicine Drives: 2012 VW GTI, 2007 TBSS, 2002 Camaro Join Date: Oct 2008 Location: Morehead, Kentucky Posts: 782	The axel back is the same on both M6 and A6...the difference is in the middle...their is a huge resonator on the A6 (to supress the sound of the AFM kicking in). With TM gone from the Tranny and the headers on, it has certainly become a quicker ride. And now it sounds appropriate for what it is. __________________

06-26-2009, 04:24 PM	#9
mike@newera Drives: 2010 Camaro 2ss L99 A6 Join Date: Jan 2009 Location: Rochester, NY Posts: 406	Nice gains, I will be putting the ARH system on my L99 in the next week or 2, I will be real happy with the same increase in power.

06-26-2009, 07:08 PM	#13
Tom@ARH Drives: 2003 Corvette ZO6 Join Date: May 2009 Location: L.I.N.Y. Posts: 48	Honestly I don't really know what's available yet the car is still so new that I have'nt seen an aftermarket system up close yet everyone is still scrambling to get parts out. Ultimately it will more than likely be a Borla system or something custom fabbed with our mufflers if it were my personal car.

06-26-2009, 07:36 PM	#14
Mod007 Drives: Camaro SS/RS Join Date: May 2009 Location: Austin TX, Posts: 477	I just ordered my Corsa Catback (ships Monday!), after I buy my Vararam CAI, ARH are next on my list! Does anyone sell them without the cats and if so how much? __________________ Camaro SS/RS Corsa Catback

06-26-2009, 09:29 PM	#15
pharmd Master of Medicine Drives: 2012 VW GTI, 2007 TBSS, 2002 Camaro Join Date: Oct 2008 Location: Morehead, Kentucky Posts: 782	^I'm sure Tom or Nick would hook you up with a catless setup...but I guess my question would be why would you want to...the high flow cats they use are a minimal hp robber and you can always run cutouts to gain that totally roudy sound everyone wants. With no cats, you will have to deal with the "gas" smell, fail emissions, and probably have some interior drone. I'm just saying....I've been there on both my TA and TBSS and if you can get high flow cats that don't restrict on power, I'd personally rather run those, especially on something I'm gonna drive alot. If its just a weekend car for you, then I guess that may be a little different. I've got a wife to deal with, so I don't have a choice. __________________

06-26-2009, 09:53 PM	#16
A.R. Headers Drives: Pontiac G8 GT Join Date: May 2009 Location: new york Posts: 258	Pharmd, Thanks for posting your results. 42RWHP gains is just great. Enjoy your ride this summer and thanks for choosing ARH. Nick

06-27-2009, 05:10 AM	#18
ADM PERFORMANCE 214-228-8782 Drives: 2013 ZL1 #138 Join Date: Oct 2008 Location: DfW - Texas Posts: 3,471	Magnaflow 3" Mike and Nick.....I told you we got this handeled! At least in house for now. Last edited by ADM PERFORMANCE; 06-27-2009 at 08:54 AM.

06-27-2009, 06:22 AM	#19
pharmd Master of Medicine Drives: 2012 VW GTI, 2007 TBSS, 2002 Camaro Join Date: Oct 2008 Location: Morehead, Kentucky Posts: 782	^Andy, do you have any sound clips of that....That's basically what I was thinking about, but it has to be a wife approved sound level so I need to hear it. The fit/finish is great as uaual from you guys! __________________

06-27-2009, 08:00 AM	#20
benjj Drives: 2010 Camaro SS/RS Join Date: May 2009 Location: arizona Posts: 191	agree, would like to hear what the ARH+magnaflows sounds like

06-27-2009, 08:36 AM	#21
vsgls1 Drives: 07 GMC Sierra Join Date: Oct 2008 Location: Palm Bay, FL Posts: 425	Good deal. Can't wait to get mine on. __________________ Keith 2SS/RS MN6 in CGM. Delivered 6/22/09. Blown 7/29/09. Sold 12/6/10. 07 GMC Sierra

06-28-2009, 10:23 AM	#25
logan1080 Drives: 2003 Crew Cab Duramax Join Date: Aug 2008 Location: canada Posts: 692 View My Garage	is this system availble without cats?

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