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Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons Bolt-Ons | Intakes | Exhaust

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Old 12-02-2009, 09:54 PM   #1
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ARH 1 7/8" + MAGNAFLOW 3" = ADM ROCKS - LOUDLY!

After reading about Sack Rat's recent upgrades and the performance gains he realized, I decided to take the plunge and upgrade the EVIL RS. Re-upgrade? Well, yeah, ADM had installed the MagnaFlow cat-back 2.5" system about 4K miles ago... but knowing that a 427 package is in my future (which we didn't at the time of the 2.5" installation), I figured why not upgrade to the MagnaFlow 3" exhaust system w/a true X-Pipe center piece, along with having the 1 7/8" American Racing Headers (I had them ceramic coated to boot!) As it turned out, ADM was/is offering a package deal for these goodies, so Merry early-Christmas to me!

Since I had EVIL RS in the shop anyway, I went for a few other upgrades too. Here's the complete list:

- American Racing 1 7/8" Headers
- MagnaFlow 3" Exhaust w/X-Pipe center piece
- Ceramic Coating for AR Headers
- LPE Flanges for Headers & Exhaust
- Stretched Rear Rims w/Pirelli 305 / 35 / 20 Tires (we moved my original backs to the front, then sent the fronts off to be stretched.)
- BMR Lower Control Arms
- ADM Custom Gauges (one for the ambient temp in the air box, and one for the transmission pressure)

(Items previously installed by ADM)
- ADM Performance Cold Air Intake
- ADM 160 Degree Thermostat

Talk about an incredible sound, the 3" MagnaFlow exhaust and X-Pipe combo are just plain nasty. I freaking love it! The wider rims and tires look awesome and combined with the BMR control arms and wider rims on the front, I really like the handling and ride of the car.... not that I didn't before, but somehow the car is even better now. Andy will be tweaking the tune tomorrow and (hopefully!) I'll have dyno results to share as a result... but my butt dyno is already telling me everything that I need to know!

These upgrades really complete the picture for me and they set me up beautifully for the future-planned 427 engine. I couldn't be happier with the work Andy and the ADM Performance team did. They always do excellent work, but this particular end result (with the flanged exhaust, ceramic headers and downright nasty sound) is downright awe-inspiring for me... I fall asleep in the garage tonight!







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Old 12-02-2009, 10:30 PM   #2
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Nice set up! Any clips of the exhuast?..
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Old 12-02-2009, 10:55 PM   #3
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Nice set up! Any clips of the exhuast?..


Clean start - no gas peddle... followed by 2k rev, 2k rev, a short period of 1.5k rev, then some idling before shut down. It's late here and I didn't want to wake the neighbors (or my kid, his bedroom borders our garage!) but it gets a lot louder when you get on the peddle!

PS - Look at those FAT back tires baby!
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Old 12-03-2009, 12:16 AM   #4
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Sounds awesome, can't wait to hear it opened up!!
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Old 12-03-2009, 12:55 AM   #5
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Where and how much did it cost to get the wheels modded?
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Old 12-03-2009, 01:44 AM   #6
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Sounds good. Need another video when you're not worried about waking up the neighborhood
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Old 12-03-2009, 02:18 AM   #7
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Nice setup, sounds good! I think this will be the combo I go with when my car arrives. +1 for another vid.
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Old 12-03-2009, 10:01 AM   #8
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Noice!!!
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2010 SS L99, 536rwhp 10.843@126.72. Whipple Supercharger stock pulley, ARH 1 7/8 longtubes w/ catted xpipe, magnaflow 3" mufflers, ADM Race CAI, 3:70 gears, lightweight wheels and nitto drag radials. Stock internal L99, stock converter.

Bolt on best before blower 12.22@113.29 w/ nothing but ARH headers, catted x-pipe, ADM CAI and a tune on stock Pzero`s!

Other car 2008 C6 Ls3, z51, A6, Npp Exhaust, best bonestock pass 11.80@118.82, Number 2 on the Corvette Forums Bonestock fastest list..
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Old 12-03-2009, 10:10 AM   #9
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Another video demonstrating the new MagnaFlow 3" X-Pipe Exhaust System with 1 7/8" American Racing Headers. This time with some better rev's since I didn't have to worry about waking the neighborhood!

Initial start and idle, followed by two rev's to 2.5K rpm, followed by a rev to about 4K rpm, followed by a ramp up to about 3K rpm, followed by idle and shut down. It's about 32 degrees here today, so you gotta love the effect of smoke coming from the pipes!

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Old 12-03-2009, 11:34 AM   #10
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Are you sure that is not oil blowing out your tail??? Anyway, glad you are pleased and the rear view of your car is so much better with the aggressive wheel/tire package and being rid of the factory mufflers. I like it.
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Old 12-03-2009, 05:30 PM   #11
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Sounds good.
Not too loud on start up and and idle (keep the neighbors happy), but nice and aggressive when you open her up.
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Old 12-03-2009, 11:17 PM   #12
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Originally Posted by Number_9 View Post
Another video demonstrating the new MagnaFlow 3" X-Pipe Exhaust System with 1 7/8" American Racing Headers. This time with some better rev's since I didn't have to worry about waking the neighborhood!

Initial start and idle, followed by two rev's to 2.5K rpm, followed by a rev to about 4K rpm, followed by a ramp up to about 3K rpm, followed by idle and shut down. It's about 32 degrees here today, so you gotta love the effect of smoke coming from the pipes!


I know you like yours as much as I like mine.....Andy just does excellent work...I love the magnaflows and the AR Headers.....Sounds Great!
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Old 12-04-2009, 02:37 AM   #13
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Sweet setup!! this is exactly what i want to do!

I have a question about where the headers connect to the exhaust, In ADM 2 " header and magnaflow set up they have it weilded together i think. so now in the 1 7/8 header and magnaflow setup i think you said that you have "LPE Flanges for Headers & Exhaust" is that for a bolt up connection ?

And I can wait to see your numbers!! please post Dynograph when you get a chance!
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Old 12-04-2009, 07:38 AM   #14
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Sounds good #9
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Old 12-04-2009, 07:41 AM   #15
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Sweet setup!! this is exactly what i want to do!

I have a question about where the headers connect to the exhaust, In ADM 2 " header and magnaflow set up they have it weilded together i think. so now in the 1 7/8 header and magnaflow setup i think you said that you have "LPE Flanges for Headers & Exhaust" is that for a bolt up connection ?

And I can wait to see your numbers!! please post Dynograph when you get a chance!
Both setups are using flanges in the same spot
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Old 12-04-2009, 08:45 AM   #16
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Quote:
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Sweet setup!! this is exactly what i want to do!

I have a question about where the headers connect to the exhaust, In ADM 2 " header and magnaflow set up they have it weilded together i think. so now in the 1 7/8 header and magnaflow setup i think you said that you have "LPE Flanges for Headers & Exhaust" is that for a bolt up connection ?

And I can wait to see your numbers!! please post Dynograph when you get a chance!
I think "slip fits" are the standard out of the box setup. I like the looks and accessibility of the flanges though, and Andy's masterful welding makes adding the flanges a piece of cake.
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Old 12-04-2009, 10:07 AM   #17
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I like the looks and accessibility of the flanges though, and Andy's masterful welding makes adding the flanges a piece of cake.[/QUOTE]

Totally agree with Number_9 above. It is also a much more stable connection joining the header with the midpipe. These were welded while the headers were off the cars and then coated. Number_9 is not using CATS while I am using coated Hi-Flo CATS on my setup.
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Old 12-04-2009, 10:13 AM   #18
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Sounds awesome, I will be having an exhaust system put on mine after the winter.
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Old 12-04-2009, 01:42 PM   #19
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How and where did you S T R E T C H the wheels? How much
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Old 12-04-2009, 02:34 PM   #20
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How and where did you S T R E T C H the wheels? How much
I bought the widened wheels package that ADM is offering on their website. Worth every dime... it's unreal how bad a** these wheels look on the car... makes the others (which are now my fronts) look like training wheels! Hahahaha.
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Old 12-04-2009, 03:11 PM   #21
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Just got my car off the dyno, and all I can say is HOLY POWER INCREASE, BATMAN! Car went from 364+ in October, to 372+ today. Woohoo!!

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Old 12-04-2009, 03:47 PM   #22
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Sounds really good. There should be a section, if one doesn't already exist, for different exhaust combination sound clips.
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Old 12-04-2009, 11:21 PM   #23
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Sounds really good. There should be a section, if one doesn't already exist, for different exhaust combination sound clips.
We are working on that right now...My site!


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Old 12-05-2009, 09:59 AM   #24
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We are working on that right now...My site!
Is that the "Customer Cars" section... looks like a nice way to start! haha
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Old 12-05-2009, 03:33 PM   #25
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#9...I've heard that if ya go with a 3" system Like your's you will loose
bottom end torque unless you are making 500 HP..But if I'm reading this
rite, you actually gained from the 2.5 system to the 3"??..I geuss the back
pressure's not an issue?..If I can keep my engine stock and not loose any
torque with this my decision is made!
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