3" Dual exhaust system UPDATE Dyno Graph, Group Buy link inside...

Place you deposits... DEPOSIT LINK

Thank you Sideways for being generous enough to record these soundclips.
http://videos.streetfire.net/video/bf9f5e6...a2a0105b9bd.htm

http://videos.streetfire.net/video/e5a6850...a2a010a8faa.htm


Please note that the car used for testing is still using the OEM exhaust header. As a result, the power up top over 7800 RPM is limited due to this restriction.
The peaks gains made were 16 ft-lbs of torque and 22 hp. We believe the hp and torque would have kept climbing to redline if the header supported the increased flow.

Before: 255.2 ft-lb Torque 403.1 hp @ 8500 RPM
After: 271.3 ft-lb Torque 415.2 hp @ 8500 RPM
After trying 5 different combinations of mufflers, resonators and tips, I am finally satisfied with the aesthetics, and more importantly, the sound of this 3" dual exhaust system. I compare the sound to something between the Supersprint and the Comptech, it's a deep, warm note that has a bit of a growl to it. Of course I am biased, so if there is anyone who would like to assist me in recording a sound clip, I would offer an incentive.

The entire system is made from mandrel bent 304 stainless steel. Each system is then TIG welded and polished.

The tips are double walled and the mufflers are a straight through design.

Specifications:
The 3" mid-resonator is 15" long.
The two 2.5" mufflers are 14" x 8.5" x 5.5"
The tips are 4" OD.
The weight of the system is 39.8 lbs.

I will be testing this system at Church's dyno on Casterdog's Vortech SCed AP2 as we have a lot of consistent data on this vehicle as it progressed to the 405WHP baseline we will be starting from.

If you have any questions or comments, please post them.

I'll entertain you all with pictures in the meantime...

Regards,
Asura














This post has been edited by Asura on Feb 11 2008, 03:01 PM

very nice

Yes very nice setup and please someone help him out with the audio clips i would like to hear this.
I too went for the quiet sounding exhaust dual setup i dont really know if its quiet but it will do
Good luck on the dyno

Marcus

Thanks guys, I really appreciate it.

Perhaps I need to page HappyBrian

when will you be testing this exhaust at Church? I may be there around mid January.

Early this coming week...hopefully Monday AM.

keep us updated.....I should be around the same power level as Casterdog once the new pulley is installed.

What supporting mods do you have currently? PM me if you prefer...

T1R test pipe
ACT clutch
RC550 injectors
Emanage ultimate

and the 4" pulley will be installed and tuned in january.

Any headwork and is this the stock Vortech SCer? How much boost are you shooting for?

No work done to head, I'm shooting for 10psi or so...I should be around 400whp if everything goes well.

Exhaust and header will be worth quite a bit. I'll give you an early welcome to the club

quiet...? you probably have one of nicest growls from an exhaust i have ever heard! It sounds more like a small v8 when you go from a stop, than any s2k exhaust i've ever heard!

OT

Looks good! What are you looking to sell it for?

if there is no drone, i would be interested in this exhaust.

HOT

ALL exhausts have drone, there is no way to get around it.

I'm assuming you mean, as little drone as possible

I like the way it look.

Almost OEM, but still not !

:yes:

Were you able to test the exhaust on the dyno?

id like it if the tips were more like ap2 oem tips looking i think those look really good

very clean.. in for video clip if possible

I'd really like to know the price too. I'm going turbo this spring and need an exhaust to compliment my built engine

Looks good Ashish

I would like to see it compared to a 70mm single... I am getting my turbo installed in a few weeks. I currently have an RS*R 70mm single (prototype... only 5 made), but I think it might be a little loud for everyday driving. If the turbo does not quiet it down significantly I might be in the market for one of these.

http://www.s2ki.com/forums/index.php?showtopic=546809

I am going to be around 15psi shooting for 425 on pump gas and sky's the limit for my high-boost race gas tune. I am getting it tuned by Mase at Stage6.

John