True Dual System?
Thread Starter
Safety Car
Joined: Jan 2006
Posts: 3,566
Likes: 4
From: Mt Laurel NJ
St. Jude Donor '06-'07
True Dual System?
Hi everyone,
I have discovered that the front precats on my bone stock 90 are shot, and need replacement.
I am thinking of going to a true dual system, but I am not sure were to get one. Mid America sells a dual system, but it has no cat, and is only 2-1/4 inches, I would like to be 2-1/2. I found a place on line that sells inline cats, and I am thinking of buying them and just cutting out a section of the duals to install them. I guess that I would weld the front and clamp the rear. If anyone has any other ideas (other than headers), I am all ears. 
I see many people who say there cars have true duals, where did you get them? Is there an aftermarket supplier that makes a true dual system w/ cats?
Thanks everyone for your help.
Randy
I have discovered that the front precats on my bone stock 90 are shot, and need replacement.
I am thinking of going to a true dual system, but I am not sure were to get one. Mid America sells a dual system, but it has no cat, and is only 2-1/4 inches, I would like to be 2-1/2. I found a place on line that sells inline cats, and I am thinking of buying them and just cutting out a section of the duals to install them. I guess that I would weld the front and clamp the rear. If anyone has any other ideas (other than headers), I am all ears. I see many people who say there cars have true duals, where did you get them? Is there an aftermarket supplier that makes a true dual system w/ cats?Thanks everyone for your help.
Randy
Team Owner
Joined: Aug 2000
Posts: 40,156
Likes: 45
From: San Pedro CA
oh, well... answer here... answer in email... it really doesn't matter. 
I would go with a true dual system, but I would consider getting LT1 style hangers... it would make it easier to hang up.
Also, get an x-pipe. It will help to kill resonance.
Carsound and Random Tech make some good quality cats that will work great. You do want the 2.5" system. It will support more power than a 2.25"...
I would go with a true dual system, but I would consider getting LT1 style hangers... it would make it easier to hang up.
Also, get an x-pipe. It will help to kill resonance.
Carsound and Random Tech make some good quality cats that will work great. You do want the 2.5" system. It will support more power than a 2.25"...
Pro
Joined: Nov 2006
Posts: 729
Likes: 0
From: Concord North Carolina
I changed my stock setup from 2 precats and a rear cat to true dual.....no cats.....flowmasters......Then I went to Meinike here and they bent the pipe for me into true dual put that on with muffler eliminators loud and everything but it was clamped and didnt fit good so I took it off and now its sitting on the garage floor. Im lookn for new piping and actually make it fit. Other than it pretty much rattling, falling loose, and not fitting....sound was fine but I like it loud and the drone wasnt too bad for me...Im a teenager though and I dont mind it as much as a older person.
Last edited by B!@cK 86 V3tt3; Dec 28, 2006 at 10:35 AM.
Le Mans Master
Joined: Feb 2005
Posts: 5,146
Likes: 3
From: The Motor City
I think no mater how you cut it there will be some fab. work needed for your 90. I believe the R.Tech stuff is only made for Long Tubes not stock manifolds. I have the R.Tech. set-up (bullet cats, 'X' pipe etc.) and the pipes are stainless mandrill bent and ,well made but needed some LT hangers welded and some massaging. The LT-1 modded would probably be the best bang for the buck as I have seen used ones sell very inexpensively.
Drifting
Joined: Dec 2003
Posts: 1,564
Likes: 28
From: Medina OH
I had mine made with dual cross-overs. At a good shop, this is a piece of cake. I had a 2 1/2 inch setup, then had a 3 inch system built.
http://www.cardomain.com/ride/2236613/1
Before the PeteK tranny :-)
http://www.cardomain.com/ride/2236613/1
Before the PeteK tranny :-)
Thread Starter
Safety Car
Joined: Jan 2006
Posts: 3,566
Likes: 4
From: Mt Laurel NJ
St. Jude Donor '06-'07
Thanks for the pic's Mikey, I think I am going to go with the pipes that Corvette Central sells, as it comes w/ a crossover. I wanted to have a true dual system made, so I went to a couple of muffler shops near were I live (Elkton, MD). They both flatly refused, saying it was illegal. I told them I wanted the system to have cats, but they said they could not remove the orginal cat w/o replacing it. They would not even put a new down pipe w/o the precats, even though they are EPA legal. 
Oh well, screw them, I will just do it myself, and save the money.
Mikey, were the Mid America pipes hard to install? What about hangers?
Thanks, everyone. This forum is the best.
Randy
Oh well, screw them, I will just do it myself, and save the money.Mikey, were the Mid America pipes hard to install? What about hangers?
Thanks, everyone. This forum is the best.
Randy
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Pro
Joined: Nov 2006
Posts: 729
Likes: 0
From: Concord North Carolina
Thanks for the pic's Mikey, I think I am going to go with the pipes that Corvette Central sells, as it comes w/ a crossover. I wanted to have a true dual system made, so I went to a couple of muffler shops near were I live (Elkton, MD). They both flatly refused, saying it was illegal. I told them I wanted the system to have cats, but they said they could not remove the orginal cat w/o replacing it. They would not even put a new down pipe w/o the precats, even though they are EPA legal. Oh well, screw them, I will just do it myself, and save the money.
Mikey, were the Mid America pipes hard to install? What about hangers?
Thanks, everyone. This forum is the best.
Randy
Oh well, screw them, I will just do it myself, and save the money.Mikey, were the Mid America pipes hard to install? What about hangers?
Thanks, everyone. This forum is the best.
Randy
Illegal Meinike made mine so....
Team Owner
Joined: Dec 1999
Posts: 34,873
Likes: 487
From: Lacey WA RVN 68-69
NCM Sinkhole Donor
Thanks for the pic's Mikey, I think I am going to go with the pipes that Corvette Central sells, as it comes w/ a crossover. I wanted to have a true dual system made, so I went to a couple of muffler shops near were I live (Elkton, MD). They both flatly refused, saying it was illegal. I told them I wanted the system to have cats, but they said they could not remove the orginal cat w/o replacing it. They would not even put a new down pipe w/o the precats, even though they are EPA legal. Oh well, screw them, I will just do it myself, and save the money.
Mikey, were the Mid America pipes hard to install? What about hangers?
Thanks, everyone. This forum is the best.
Randy
Oh well, screw them, I will just do it myself, and save the money.Mikey, were the Mid America pipes hard to install? What about hangers?
Thanks, everyone. This forum is the best.
Randy
What you might have been able to do is to take the car to the shop without the exhaust in place (cut everything off below the manifords and have them install components. You would have to state that the original cats were not on the car when you got it or that you would state that the cats had been physically damaged and you removed them.
Pro
Joined: Dec 2004
Posts: 674
Likes: 1
From: Daytona Beach Florida
HERE'S MINE
VIDEO
w/flomasters and Corvette Central's true duals w/crossover
http://smg.photobucket.com/albums/v2...MVI_0318_1.flv<<<<<<<<<<<<<<<<<<<<<<<<
VIDEOw/flomasters and Corvette Central's true duals w/crossover
http://smg.photobucket.com/albums/v2...MVI_0318_1.flv<<<<<<<<<<<<<<<<<<<<<<<<
Burning Brakes
Joined: Sep 2003
Posts: 1,214
Likes: 0
From: Miami FL
You may want to consider an LT1 exhaust. It flows weel and you can get one for free most of the time. It is a big improvement over the L98 system, and it will fit in just fine with only minor mods.
Team Owner
Joined: Dec 1999
Posts: 34,873
Likes: 487
From: Lacey WA RVN 68-69
NCM Sinkhole Donor
HERE'S MINE
VIDEO
w/flomasters and Corvette Central's true duals w/crossover
http://smg.photobucket.com/albums/v2...MVI_0318_1.flv<<<<<<<<<<<<<<<<<<<<<<<<
VIDEOw/flomasters and Corvette Central's true duals w/crossover
http://smg.photobucket.com/albums/v2...MVI_0318_1.flv<<<<<<<<<<<<<<<<<<<<<<<<
Pro
Joined: Dec 2004
Posts: 674
Likes: 1
From: Daytona Beach Florida
My installer said they were very solid and well built (fit was good). He was really surprised. He did have to work a little to get it to fit right.
Oh yeah, the u-shaped clamps were to small, so he had to spread them w/ a hydraulic tool. SOP improvement too boot.
