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40whp and 30wtq gains with Dundon Motorsports Headers, no flash required!

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Old 03-23-2016, 01:14 AM
  #46  
loungedog
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Originally Posted by [email protected] View Post
few pics of the catted 991 system in progress, still hoping to hit the dyno friday.









What are you expecting Hp and torque to end up being around?
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Old 03-23-2016, 01:48 AM
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Will have dynos this week!
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Old 03-23-2016, 02:06 AM
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Originally Posted by [email protected] View Post
Will have dynos this week!
Awesome.
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Old 03-23-2016, 09:49 AM
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Originally Posted by loungedog View Post
What are you expecting Hp and torque to end up being around?
Honestly I am trying to build this in a way that the design does not limit the power. Meaning that just "throwing cats in" can affect how the waves travel and reflect, and this is always an issue with a catted vs non catted exhaust. I have spent a lot of time designing this setup, (going on day 5 now) just to make sure everything is correct, header lengths are close, easy to reproduce, and such. That damn under tray keeps getting in my way!

Hopefully this will be close to the race header setup as far as gains. The design and placment and such is important but I do not want to share all the details on how to design exhaust systems with everyone... including our competition

Anyways, Hopefully I have it all welded up today

as far as cost goes, I think the cost of cats, and added material is going to add $2000 to the price of the exhasut
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Old 03-23-2016, 11:27 PM
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Will the system keep the oem valves working as on the race version?
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Old 03-23-2016, 11:51 PM
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Fantastic work. Will probably be my only modification to the RS.
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Old 03-23-2016, 11:58 PM
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Originally Posted by Maxi_z View Post
Will the system keep the oem valves working as on the race version?
Yes, same valves and same drone free operation!

Originally Posted by Jon70 View Post
Fantastic work. Will probably be my only modification to the RS.
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Old 03-24-2016, 06:09 PM
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Catted prototype exhaust complete and on the car. Dyno is tomorrow mid day.

A little louder at 2000 inside but quieter outside.
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Old 03-24-2016, 06:19 PM
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^Great work. Pretty darn impressive.

Now get working on the GT4 and stop spoiling these GT3 guys. You're supposed to be helping us beat them
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Old 03-24-2016, 06:24 PM
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Originally Posted by [email protected] View Post
Catted prototype exhaust complete and on the car. Dyno is tomorrow mid day.

A little louder at 2000 inside but quieter outside.
Sweet!!! Lots of peeps excited to see what this shows on the dyno.
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Old 03-24-2016, 06:24 PM
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Originally Posted by Jimmy-D View Post
Now get working on the GT4 and stop spoiling these GT3 guys. You're supposed to be helping us beat them
Good luck with that, Jimmy!
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Old 03-24-2016, 06:27 PM
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Originally Posted by robmypro View Post
Good luck with that, Jimmy!
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Old 03-24-2016, 06:37 PM
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Originally Posted by Jimmy-D View Post


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Old 03-24-2016, 06:43 PM
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How long does the install take? My dealer is saying 12 hours, which sounds way too long compared to Matt's video?
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Old 03-24-2016, 07:04 PM
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Originally Posted by Earlierapex View Post
How long does the install take? My dealer is saying 12 hours, which sounds way too long compared to Matt's video?
That's daylight robbery!
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