Exhaust finalists
02-24-2019, 11:31 AM
#1
Exhaust finalists
I have a 991.1 GT3 coming next week and I have been researching all the previous exhaust threads. The finalists are GMG/Sharkwerks/GRP(all sound the same to me) bypass, the IPE catback, or Dundon full street system. A couple questions.....
1. Has anybody actually dyno’d the IPE stuff? I love the sound but sure as heck don’t want to lose power.
2. Is there really any difference in the sound of the various center bypass brands?
3. I love the Dundon and it would certainly be my first choice is money was no object. Does anybody know of or have a used system for sale?
Actually if anybody has a used system let me know.
This will be my first GT car and I’m excited.
1. Has anybody actually dyno’d the IPE stuff? I love the sound but sure as heck don’t want to lose power.
2. Is there really any difference in the sound of the various center bypass brands?
3. I love the Dundon and it would certainly be my first choice is money was no object. Does anybody know of or have a used system for sale?
Actually if anybody has a used system let me know.
This will be my first GT car and I’m excited.
02-24-2019, 04:14 PM
#2
Rennlist Member
Sent a PM on a set of Dundon headers.
02-24-2019, 05:46 PM
#5
02-24-2019, 05:49 PM
#6
02-24-2019, 05:51 PM
#7
I’m in the camp of not believing any exhaust can free up meaningful horsepower. In that case, for me, it comes down to build quality and brand credibility.
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02-24-2019, 07:18 PM
#8
That might be with headers. The rest of the system really isnt that different than many out there. Removes side mufflers and replaces with 2 resonators up front.
02-24-2019, 07:34 PM
#9
Definite power increase with the Dundon headers / full exhaust. Completely different than a center muffler delete pipe.
02-24-2019, 09:45 PM
#10
There’s a significant increase in hp/tq with the Dundon Race Headers. I went stock, to Dundon, to back to stock (for a brief time) and almost wanted to get rid of my GT3 because of the feel in stock form. It’s incredible how much of a difference the race headers make. Would not own my GT3 without them. With them, I’ll never sell the car. It’s that serious.
02-24-2019, 09:56 PM
#11
Instructor
If ok spending some money and making a significant change from stock, Dundon is the best. Friends car has street headers and even those make a difference. Great quality.
Personally wanted to keep my car close to stock. I like the SW and Akra center bypasses becuase they mount just like the stock center and dont drastically change the tone of the stock sound and keep the factory tips. Ended up going Akra. Wanted to try something different but have had SW before and its great.
Personally wanted to keep my car close to stock. I like the SW and Akra center bypasses becuase they mount just like the stock center and dont drastically change the tone of the stock sound and keep the factory tips. Ended up going Akra. Wanted to try something different but have had SW before and its great.
02-24-2019, 09:59 PM
#12
Not sure about your research however the GMG & bbi/GRP center deletes sound similar but do not sound like the Sharkwerks. The notes are distinctly different. The former and IPE are center bypass deletes while the DMS race headers is a full exhaust system (from headers through side muffler delete). Quite different. What are aiming for, sound or power? If power is your goal, then DMS is the proven solution (Fabspeed also has a race system but make sure you get their 2nd gen system), the sound from the DMS isn’t shabby either. Expect to pay around $6-7K. If your goal is sound, then I suggest you do further research as you’ll get great sound (but no added power) for about $2K from either GMG, bbi/GRP, IPE or Sharkwerks but their sound are not identical.
In order to narrow down your decision, clarify if your goal is power or just a better sound.
In order to narrow down your decision, clarify if your goal is power or just a better sound.
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hashash (01-06-2022)
02-24-2019, 09:59 PM
#13
There’s a significant increase in hp/tq with the Dundon Race Headers. I went stock, to Dundon, to back to stock (for a brief time) and almost wanted to get rid of my GT3 because of the feel in stock form. It’s incredible how much of a difference the race headers make. Would not own my GT3 without them. With them, I’ll never sell the car. It’s that serious.
02-24-2019, 10:04 PM
#14
Not sure about your research however the GMG & bbi/GRP center deletes sound similar but do not sound like the Sharkwerks. The notes are distinctly different. The former and IPE are center bypass deletes while the DMS race headers is a full exhaust system (from headers through side muffler delete). Quite different. What are aiming for, sound or power? If power is your goal, then DMS is the proven solution (Fabspeed also has a race system but make sure you get their 2nd gen system), the sound from the DMS isn’t shabby either. Expect to pay around $6-7K. If your goal is sound, then I suggest you do further research as you’ll get great sound (but no added power) for about $2K from either GMG, bbi/GRP, IPE or Sharkwerks but their sound are not identical.
In order to narrow down your decision, clarify if your goal is power or just a better sound.
In order to narrow down your decision, clarify if your goal is power or just a better sound.
I’ll have to listen to more sound clips but most center bypass pipes sounded similar. Generally I prefer higher pitch vs lower pitch.
Thanks for all the replies
02-24-2019, 10:07 PM
#15
Rennlist Member
There’s a significant increase in hp/tq with the Dundon Race Headers. I went stock, to Dundon, to back to stock (for a brief time) and almost wanted to get rid of my GT3 because of the feel in stock form. It’s incredible how much of a difference the race headers make. Would not own my GT3 without them. With them, I’ll never sell the car. It’s that serious.