true duals
knowledge junkie
Joined: Mar 2001
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From: Atlanta, GA
Please use the seach feature as this has been covered MANY MANY MANY MANY MANY MANY times and is a very common question.
In general, it adds a tiny bit of top-end power but you may be sacrificing a bit of low end torque. It's also a bit noisy.
It would be better to switch to a good sounding full exhaust system (headers, midpipe/cat, catback) or a lightweight good sounding single exhaust.
In general, it adds a tiny bit of top-end power but you may be sacrificing a bit of low end torque. It's also a bit noisy.
It would be better to switch to a good sounding full exhaust system (headers, midpipe/cat, catback) or a lightweight good sounding single exhaust.
Thread Starter
Rotary Freak
Joined: Jan 2005
Posts: 1,534
Likes: 28
From: Good Ol' Ky
if you are going to just tell me to use the search, don't reply.. theres not really a point in complaining about someone not using the search, then answering the question....
but i wasn't just talking about the exhaust system...
i was planning on getting header, and all....
i don't really care if its loud, sound isn't really what i'm after
but i wasn't just talking about the exhaust system...
i was planning on getting header, and all....
i don't really care if its loud, sound isn't really what i'm after
Thread Starter
Rotary Freak
Joined: Jan 2005
Posts: 1,534
Likes: 28
From: Good Ol' Ky
hes had his like that since he's had his 7
which has been since about the middle of last summer...
hasn't had anything said to him yet
but it seems like law enforcement is pretty leaniant about the loudness of your car....
also had a friend that ran a straight pipe on a honda prelude.... could hear him literaly a mile away..
never had anythign said to him either
which has been since about the middle of last summer...
hasn't had anything said to him yet
but it seems like law enforcement is pretty leaniant about the loudness of your car....
also had a friend that ran a straight pipe on a honda prelude.... could hear him literaly a mile away..
never had anythign said to him either
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Rotary Apprentice
Joined: Jan 2005
Posts: 2,181
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From: USA
well, true duals, as in one pipe from each exhaust port all the way to two mufflers (completely separate the whole time) actually wont be as good as a nice collected header. I'm not really sure how racing beats true duals works but their full exhaust with collected header and single exit is probably the best choice.
All of the people who don't think it does much have obviously never personally owned or driven a true dual system. It is a huge difference over stock. No one who has actually owned one would claim that "it adds a tiny bit of top-end power but you may be sacrificing a bit of low end torque". This is wrong. It noticably adds everywhere and loses nowhere. It isn't the best system for every porting style though. A bridgeport or peripheral port would be at a disadvantage with this setup as they require a collected system to make their power potential. Personally I don't like the sound of the true duals but that is just me. When I had my true dual system, that was my only complaint. It had a nice powerband though. The Racing Beat true dual system isn't that loud. Any of those eBay ricer style mufflers everyone is so fond of like the N1 are far louder that this. Admittedly it is harder to effectively muffle a noncollected system than a collected one but it can be done just fine.
I've also had great luck with headers as well as my favorite system, the long primary that collects at the back. Any system is a gain over the stock exhaust manifold though so do your best to at least get rid of that cast iron paperweight. The stock manifold only has a 2" outlet so it can't flow much no matter how large the exhaust after it is.
The key to controlling noise is obviously the mufflers. Just because it's quiet doesn't mean it's restrictive. The biggest misconception is also that it must be free flowing because it is a straight through design. Also not true. There are good ones and bad ones. The Racing Beat mufflers are not straight through and are decently quiet. As many people are so fond of pointing out, they aren't the best flowing mufflers on the market. That's OK though. Don't let this fool you. This doesn't matter. They flow all that the engine can flow and that's all that matters. The ability to flow more than this is irrelevant as you can't use it. They are not suitable for a bridge or peripheral port engine though as these engines are far more sensitive to exhaust pressure than a stock or street port engine which don't care nearly as much.
The Racing Beat true dual system is admittedly heavy and expensive. It is very well built though. It isn't terribly loud especially compared to many other systems out there. It does it's job very well for what it was designed to do. You won't pass emissions with it if this is a concern to you. Many people don't care and if you really need to you can get creative and fab up a cat that you install one day a year. You will also have to get used to the sound. You may or may not like it. Many people love the sound. I personally hate it but that's just my personal opinion and my only real gripe with this style of setup. From a performance standpoint I see no reason why you wouldn't be happy with this setup. It makes more average power than all of the other alternatives out there on a stock or streetported engine.
I've also had great luck with headers as well as my favorite system, the long primary that collects at the back. Any system is a gain over the stock exhaust manifold though so do your best to at least get rid of that cast iron paperweight. The stock manifold only has a 2" outlet so it can't flow much no matter how large the exhaust after it is.
The key to controlling noise is obviously the mufflers. Just because it's quiet doesn't mean it's restrictive. The biggest misconception is also that it must be free flowing because it is a straight through design. Also not true. There are good ones and bad ones. The Racing Beat mufflers are not straight through and are decently quiet. As many people are so fond of pointing out, they aren't the best flowing mufflers on the market. That's OK though. Don't let this fool you. This doesn't matter. They flow all that the engine can flow and that's all that matters. The ability to flow more than this is irrelevant as you can't use it. They are not suitable for a bridge or peripheral port engine though as these engines are far more sensitive to exhaust pressure than a stock or street port engine which don't care nearly as much.
The Racing Beat true dual system is admittedly heavy and expensive. It is very well built though. It isn't terribly loud especially compared to many other systems out there. It does it's job very well for what it was designed to do. You won't pass emissions with it if this is a concern to you. Many people don't care and if you really need to you can get creative and fab up a cat that you install one day a year. You will also have to get used to the sound. You may or may not like it. Many people love the sound. I personally hate it but that's just my personal opinion and my only real gripe with this style of setup. From a performance standpoint I see no reason why you wouldn't be happy with this setup. It makes more average power than all of the other alternatives out there on a stock or streetported engine.
Originally Posted by bunnybunny
yes i have... my friend owns an fc with nothing but a pipe coming from the exhaust manifold
no muffler or anything
no muffler or anything
True duals would be your best bet if cost isn't an issue, I had them on my S5 fc.. and it made a difference everywhere.. and it just loved to rev.
Lose low end?
No I think I actually gained some low end torque with this exhuast it felt alot more torque durring city driving.. sound nice and quiet.. till you got to 4k.. then it just screemed.
It pulls a bit harder then the collected exhuast.. although the main difference was the power band.. my collect would be choked by 7k.. and by 7.5k it was flat on its face.. not the true dual, it would rev hard and pull hard till about 8.5k.. then started dieing off a bit.. but by then who cares, its already time to change gears.
If you go true duals.. you won't be disapointed.
Lose low end?
No I think I actually gained some low end torque with this exhuast it felt alot more torque durring city driving.. sound nice and quiet.. till you got to 4k.. then it just screemed.
It pulls a bit harder then the collected exhuast.. although the main difference was the power band.. my collect would be choked by 7k.. and by 7.5k it was flat on its face.. not the true dual, it would rev hard and pull hard till about 8.5k.. then started dieing off a bit.. but by then who cares, its already time to change gears.
If you go true duals.. you won't be disapointed.
Full Member
Joined: Jun 2005
Posts: 110
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From: Pleasanton CA
I have an S5 and I'm trying to get a true dual system.....I was hoping to hear it first though....I don't really care for the noise too much....but I don't want it so loud I can't listen to music or anything and I'll probobly be driving at around 3K-3.5K most of the time
Here are two vids of my stock port with true duals,
http://www.mirror.wreckedyouth.com/v...unwinmedia.wmv 21.1Mb
http://www.mirror.wreckedyouth.com/v...ndowsmedia.wmv 34.7Mb
Not for you dial up fokes.
Car sound nice a quiet at cruise.. 3k seems to be the sweet spot for quitness. Not much over stock at cruise.. just a nice little rumble.
http://www.mirror.wreckedyouth.com/v...unwinmedia.wmv 21.1Mb
http://www.mirror.wreckedyouth.com/v...ndowsmedia.wmv 34.7Mb
Not for you dial up fokes.
Car sound nice a quiet at cruise.. 3k seems to be the sweet spot for quitness. Not much over stock at cruise.. just a nice little rumble.
