40whp and 30wtq gains with Dundon Motorsports Headers, no flash required!
01-12-2018, 10:52 PM
#316
Is there a purpose for the valved portion of the race headers? Can the valve be eliminated or can it be purchased with valveless side pipes? I am contemplating cutting the side pipe where the red line is after the 02 sensors to fit a different exhaust that only has a one pipe opening. Thanks
01-12-2018, 10:56 PM
#317
Burning Brakes
100% Real. I didn't know these guys from Adam when I took a flyer on one of their first sets. This was my 13th exhaust variant on my car. It was the last. Going on my RS as well.
https://rennlist.com/forums/991-gt3-...s-exhaust.html
https://rennlist.com/forums/991-gt3-...s-exhaust.html
01-12-2018, 11:04 PM
#318
01-13-2018, 05:23 AM
#319
Three Wheelin'
01-13-2018, 01:55 PM
#320
Rennlist Member
Having followed Matt for a few miles in the Smokies the Dundon headers sound great and the car pulls hard out of the corners.
01-13-2018, 02:36 PM
#321
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Is there a purpose for the valved portion of the race headers? Can the valve be eliminated or can it be purchased with valveless side pipes? I am contemplating cutting the side pipe where the red line is after the 02 sensors to fit a different exhaust that only has a one pipe opening. Thanks
if you don’t drive on the street, we can absolutely make a set of race headers without valves for you.
Contact me directly for pricing and ETA as we will have to custom make them.
i would also recommend our lifetime center muffler for track use as the lack of side mufflers combined with track use is too much for the stock center muffler to take and it will crack...
01-13-2018, 03:15 PM
#323
Itching for these headers so badly.
Jamie, is it possible to purchase the headers without Dundon's side mufflers? As in, I'm interested in running catless, but I also would like to use AWE's switchpath exhaust, which replaces the side mufflers and the center muffler but keeps the ability to close valves for no drone while having the raucous sound of a center muffler bypass. I would hope this doesn't affect the ability to cause no CEL's to occur. Please educate me!
Thanks.
Jamie, is it possible to purchase the headers without Dundon's side mufflers? As in, I'm interested in running catless, but I also would like to use AWE's switchpath exhaust, which replaces the side mufflers and the center muffler but keeps the ability to close valves for no drone while having the raucous sound of a center muffler bypass. I would hope this doesn't affect the ability to cause no CEL's to occur. Please educate me!
Thanks.
01-13-2018, 05:31 PM
#324
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Itching for these headers so badly.
Jamie, is it possible to purchase the headers without Dundon's side mufflers? As in, I'm interested in running catless, but I also would like to use AWE's switchpath exhaust, which replaces the side mufflers and the center muffler but keeps the ability to close valves for no drone while having the raucous sound of a center muffler bypass. I would hope this doesn't affect the ability to cause no CEL's to occur. Please educate me!
Thanks.
Jamie, is it possible to purchase the headers without Dundon's side mufflers? As in, I'm interested in running catless, but I also would like to use AWE's switchpath exhaust, which replaces the side mufflers and the center muffler but keeps the ability to close valves for no drone while having the raucous sound of a center muffler bypass. I would hope this doesn't affect the ability to cause no CEL's to occur. Please educate me!
Thanks.
Our headers are much longer than stock so our side deletes don't work with other exhaust products that attach to the stock header attachment. Our headers will work with the stock center muffler, or any center muffler replacement.
That said the most power is produced by using the stock center muffler or our Llifetime 321SS muffler.
By having the valves in the side muffler deletes you obtain the same result as a switch path exhaust but get to keep the stock muffler (or ours).
Thank you,
Jamie
__________________
Dundon Motorsports
Gig Harbor, WA
253-200-4454
jamie@dundonmotorsports.com
www.dundonmotorsports.com
Facebook.com/dundonmotorsports
Instagram @dundon_motorsports
Dundon Motorsports
Gig Harbor, WA
253-200-4454
jamie@dundonmotorsports.com
www.dundonmotorsports.com
Facebook.com/dundonmotorsports
Instagram @dundon_motorsports
01-14-2018, 12:28 PM
#326
Three Wheelin'
Hi, yes there is a purpose for the valved portion of the race headers. The valve directs the exhaust flow to the upper chamber of the center muffler, this eliminates drone between 2200-3000rpm, as the factory intended.
if you don’t drive on the street, we can absolutely make a set of race headers without valves for you.
Contact me directly for pricing and ETA as we will have to custom make them.
i would also recommend our lifetime center muffler for track use as the lack of side mufflers combined with track use is too much for the stock center muffler to take and it will crack...
02-01-2018, 08:02 AM
#328
Hey guys, any updates on the lifetime muffler? Would really like to know the sound levels with the street headers (with and without cats) and lifetime muffler.
My RS was measured at 1000rpm - 87 dB, 3000-4000rpm - 107dB and under load went up to 130dB. Street headers with test pipes and stock center muffler. Measurements done at 45 degrees 0.5meters away. Muffler inspected - no cracks.
Limit for the Ring seems to be 120dB, would be good to pass that.
Thanks for the reply in advance!
My RS was measured at 1000rpm - 87 dB, 3000-4000rpm - 107dB and under load went up to 130dB. Street headers with test pipes and stock center muffler. Measurements done at 45 degrees 0.5meters away. Muffler inspected - no cracks.
Limit for the Ring seems to be 120dB, would be good to pass that.
Thanks for the reply in advance!
02-01-2018, 03:58 PM
#329
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Hey guys, any updates on the lifetime muffler? Would really like to know the sound levels with the street headers (with and without cats) and lifetime muffler.
My RS was measured at 1000rpm - 87 dB, 3000-4000rpm - 107dB and under load went up to 130dB. Street headers with test pipes and stock center muffler. Measurements done at 45 degrees 0.5meters away. Muffler inspected - no cracks.
Limit for the Ring seems to be 120dB, would be good to pass that.
Thanks for the reply in advance!
My RS was measured at 1000rpm - 87 dB, 3000-4000rpm - 107dB and under load went up to 130dB. Street headers with test pipes and stock center muffler. Measurements done at 45 degrees 0.5meters away. Muffler inspected - no cracks.
Limit for the Ring seems to be 120dB, would be good to pass that.
Thanks for the reply in advance!
The Quiet muffler reduces dB by about 10-12dB in our testing, cats reduce sound by 4-5dB over our race system. So a Catted system with the cats in with Quiet Muffler should get you where you need to be! We're shipping mufflers now!
