Dual exhaust system
Thread Starter
Intermediate
Joined: May 2001
Posts: 27
Likes: 0
From: Newberry, SC USA
Dual exhaust system
Does anyone out there have true duals on their L98. If so, I would like to know if they are worth it and what kind of mufflers I should use with them. I don't want it too loud, but a little more aggressive than stock.
Safety Car
Joined: Feb 2000
Posts: 4,564
Likes: 110
From: Austin Texas
Re: Dual exhaust system (bretthamm)
Go to this thread and listen to my duals at the track a few weeks ago. http://forums.corvetteforum.com/zerothread?id=148504
Yes, it is definitely worth it. Flows a lot more freely, and it gives you some additional ground clearance.
[Modified by Joe90, 7:28 PM 9/10/2001]
Yes, it is definitely worth it. Flows a lot more freely, and it gives you some additional ground clearance.
[Modified by Joe90, 7:28 PM 9/10/2001]
Melting Slicks
Joined: Sep 2000
Posts: 2,683
Likes: 0
Re: Dual exhaust system (Joe90)
I'm running true duals from the stock headers back to 2 Dynomax mufflers with a balance pipe behind the 4+3 OD fluid pan. It sounds MEAN from outside and VERY quiet inside! I had a local muffler shop fabricate the entire system and they did a good job. If you also have yours custom fabricated, be sure to get all mandrel bends and get them to put in a balance pipe (it cost $25 more in my case). If nothing else, I'm told that that balance pipe eliminates alot of resonance.
I couldn't believe how much less this cost me than say a Borla catback! :eek:
:smash:
I couldn't believe how much less this cost me than say a Borla catback! :eek:
:smash:
Thread Starter
Intermediate
Joined: May 2001
Posts: 27
Likes: 0
From: Newberry, SC USA
Re: Dual exhaust system (Romeo Barrera)
I think that this will be the best exhaust mod i could do b/c i am going to put a super ram and a 219 cam in it soon. Plus, since i have some resources, i'm going to enlarge a stock throttle body to 52mm (not the one on the car, but one that i dug up just in case). I was thinking with these mods i would need the freer flowing exhaust. What do you all think?
Le Mans Master
Joined: Apr 2000
Posts: 5,589
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From: DrunkDefender
CI 1-2-3-4-5-6-7-8 Veteran
CI-IV AutoX Champ
CI-IV Burnout Champ
St. Jude Donor '07-'10
Re: Dual exhaust system (bretthamm)
If you do it, go with a set of muffler elims. It'll be louder and more resonance with a set of mufflers than the elims. Definatly get an h-pipe. It WILL fit in there under the forward part of the transmission. Get the h-pipe, get the h-pipe, get the h-pipe. Dont fool with a balance tube out back. This was one of the 1st mods I did. (true duals w h-pipe) Heres a pic of the before and after dyno chart.
http://www.corvetteforum.net/c4/red9...res/Img001.jpg
http://www.corvetteforum.net/c4/red9...res/Img001.jpg
Racer
Joined: Sep 2000
Posts: 337
Likes: 0
Re: Dual exhaust system (red90sixspeed)
I am also planning on true duals. I don' t have any mufflers or pre cats now. If I go with the duals I will have to waste my main cat.
Will it bee too loud? I am also planning on getting headers. Will a H-pipe reduce the noice??
I don't want to put on mufflers, I like the looks of it now :D
:confused:
Will it bee too loud? I am also planning on getting headers. Will a H-pipe reduce the noice??
I don't want to put on mufflers, I like the looks of it now :D
:confused:
Advanced
Joined: May 2000
Posts: 81
Likes: 0
From: Calgary, Alberta
Re: Dual exhaust system (bretthamm)
I have removed Cats, installed stainless with h-pipe and a couple of Dynomax cans. IT IS LOUD!!!!! The resonance around 2500rpm drowns out the radio and all conversation. Cruising the parking lots leaves a trail of car alarm chirps. When cops are around, I try to slip in the clutch or be the last to leave a stop light. Do I like it, YES!!!
On the road course my 12 year old slugger pulls out of the corners a ton. Sounds like a race car and is by far the fastest car per dollar out there.
I would like to have a quieter option at times tho...
On the road course my 12 year old slugger pulls out of the corners a ton. Sounds like a race car and is by far the fastest car per dollar out there.
I would like to have a quieter option at times tho...
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Melting Slicks
Joined: Mar 2001
Posts: 2,150
Likes: 304
From: Timra, Sweden
Re: Dual exhaust system (bretthamm)
I made a 2.5" dual exhaust with full length headers and X-Pipe that uses the stock mounting points. It is louder than stock but I have no problems with resonance.
Click to enlarge:
Click the picture in my sig for more pictures.
Click to enlarge:
Click the picture in my sig for more pictures.
Race Director
Joined: Jul 2000
Posts: 15,921
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From: College of Charleston, SC
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Re: Dual exhaust system (JoBy)
Will gutting all the cats, pre and main, without mufflers be way too loud? How much resonance? Will it be a deap growl like a muffler-less Harley? My new engine will have a hot cam in it with some effect to the idle, but not much. I was told the mufflers help to keep cold air from reaching the heads and cracking them :confused:. Is that true?