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

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

Old 03-05-2016, 07:24 AM
  #31  
Kobalt
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Originally Posted by [email protected] View Post
Catted 991 GT3/RS system work starts on Monday...

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Old 03-07-2016, 07:53 PM
  #32  
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Dropped my stock 2015 991GT3 to Charles this morning for him to work on his latest exhaust fitment. Picked my car up this am from Cantrell's for alignment check and to put on PSC2 and take off MPSS I had on this winter. Our wettest so far.
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Old 03-11-2016, 12:12 AM
  #33  
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Anxiously awaiting this cat'd exhaust development. Keep us posted
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Old 03-11-2016, 01:14 AM
  #34  
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Originally Posted by MileHigh911 View Post
Anxiously awaiting this cat'd exhaust development. Keep us posted
hoping to dyno on wednesday!
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Old 03-11-2016, 01:58 AM
  #35  
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Charles,

So it might be possible to get a catted version for the April Smokies event?
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Old 03-11-2016, 02:33 AM
  #36  
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Originally Posted by Alan C. View Post
Charles,

So it might be possible to get a catted version for the April Smokies event?
Yes maybe. When is that date? I think we have a few cats here tomorrow. Those have been the major hold up.
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Old 03-11-2016, 03:01 AM
  #37  
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Originally Posted by [email protected] View Post
Yes maybe. When is that date? I think we have a few cats here tomorrow. Those have been the major hold up.
Most will arrive May 14. I plan to leave on April 12. I'm really interestd to see how you skin this cat.

Thanks for all your hard work.:
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Old 03-13-2016, 10:39 PM
  #38  
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Would it be possible to fit your catted version headers using some oem mounting replacement side mufflers or pipes as the cargraphic ones?
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Old 03-14-2016, 12:59 AM
  #39  
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Originally Posted by Maxi_z View Post
Would it be possible to fit your catted version headers using some oem mounting replacement side mufflers or pipes as the cargraphic ones?
My setup will not be modular with the factory side mufflers. I build my setups complete for maximum power and without those compromises the OEM exhaust incorporates. I could build something that could utilize the OEM side mufflers but they would compromise a lot of the performance.
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Old 03-14-2016, 10:50 PM
  #40  
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I asked that not because I wanted to use oem side mufflers but to know if it would be possible to use the cargraphic valved pipes that I already have on the car.

It could be interesting for some people who already have some side muffler delete pipes or other valved pipes as they could just buy your headers catted or not and could if needed fit back the oem side mufflers for resell or track noise limits or other reasons.

I see that the side muffler valved pipes you sell with your set up look quiet similar in design as other brands but don t know if the restriction in power would be that much different because of the curve of the pipe at that point or not at all.
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Old 03-14-2016, 10:57 PM
  #41  
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Where the Dundon valved side pipes join with the Dundon Headers is a different location than the factory side mufflers. So because of that parts that were designed for factory exhaust joining positions won't work with our headers.

As Charles said, all of it is designed to maximize power, the cargraphic and a few other valved side deletes are pretty good pieces, but were designed for the stock exhaust setup. I'm sure the cargraphic parts flow fine, but they just won't fit.

I'm sure there are others that would love a nice set of Cargraphic side pipes, if you're interested in picking up 40whp!
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Old 03-16-2016, 03:16 PM
  #42  
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I envy you guys going DEFCON III with your GT3 exhaust. I'm contemplating a more modest upgrade and would like to go with a GMG center replacement. Shoot me a pm if this is your current setup and you're going Dundon . .
Thanks.
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Old 03-22-2016, 11:00 PM
  #43  
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few pics of the catted 991 system in progress, still hoping to hit the dyno friday.

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Old 03-22-2016, 11:46 PM
  #44  
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I'd say it looks factory but they wouldn't turn out a system that looks as good as yours. Nice work.
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Old 03-22-2016, 11:54 PM
  #45  
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Car looks familiar. Not as clean as Matt's but SB too.
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