Dual exhaust [Merged 7-9]

[napkinthief]

Taken from the Machv.com gallery.

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If I didn't know that was a 1g, Id say it was a muscle car. Looks real good though, 4 tips is a step beyond what I am looking for.

 

[WMD]

I think I may look around for that backpiece of the srt4 exhaust, and fabricate an extension to our exhaust to the center to utilize it, then bolt it on and see how it sounds. Anyone know the diameter of it?

Mopar is selling a direct bolt-on catback that is 2.5". So the bolt on part makes me think the stock size is 2.5".
That 1g reminds me of a 300zx.

EDIT: i also looked in some dodge forums and thet said the srt-4 has a 2.5" piping.
Oh and being a n/t like me you know that, n/t - muffler = REALLY LOUD

 

[sweet97]

I was looking under the rear of the car and with some welding work I believe the car('93AWD) could run dual mufflers. Would also require a body man to create the opening on the drivers side.
Should look good, flow more and be quieter. If not practical then i need another option to make ny system quieter. I have no cat, an 18" Summit glasspack up front under the passenger section and a magnaflow out back.
Suggestions or have you done duals? mark

 

[staticbrainwash]

Get a cat again if you want it quieter. Or Get an oval can muffler with dual outlets. That should help. I wouldn't mind seeing duals on a 1gb, but i'm a little iffy on the rice factor with how many cavy's and sunfires putt around town with dual fart cans.

 

[sweet97]

Geoff, my Magnaflow is 5"x8"x18" with dual 3" outlets and as I posted I have an 18" Summit glasspack before that. The cat would be ok except for all of the leaded fuel I run but I have heard of a product by NOS that raises octane an actual 7 full points and is cat friendly.
My section for the cat is 15", flanged. I have been looking as to what I can put in there. I don't remember if a muffler in summit that says it's 15" long is the total length or the body. Just thinking and cheching options. mark

 

[90AWDTalon]

Another option that would allow you to run a cat and run leaded gas would be one of those electic exhaust cutout's. Put this in front of the cat. I have never used one and don't know about fitment, but might be worth looking into.

 

[staticbrainwash]

He would have to continuously switch fuels though. I don't know how that would bode with the ecu (even with a reset).

I didn't know you were running leaded fuel. Hmmmm, that throws a whole new mix into things.

Hell, you know what. Try the dual duals, could be cool. I've been thinking about it just for looks. And i bet the sound would be mean too.

Just do it and see how it goes. It can't be THAT bad.

 

[sickgsx-316]

I dont get it, why run a glasspack which as I understand is for the sole purpose of extra noise and then want to quiet the system down? If there is a benefit to them, please enlighten me.

I would say that if you want it quieter pull the glasspack, that should help, possibly replace it with a nice long resonator, or even keep the pack if you're so inclined and weld in said resonator.

 

[staticbrainwash]

Glasspacks and resonators are very similar. I believe they are made with similar packing material. If i'm wrong, then yes, get a resonator

 

[this_tsi_8urV8]

Why do you want it quieter? In order to run, Just leaded gas, that means it would have to be track only, not street driven. How do you get passed emissions? And yes, a cat would make it quieter, but then since you are only using leaded gas, I do not know how to help you there.

 

[sweet97]

Let me try to start from question 1 and work down. The electric cutouts make for a lot of fumes and noise. The ones I have seen work off the boost controller or something similar so the more positive pressure it sees the more it opens. The electric would either be open or closed. Tough to operate if you need to get on it quick to run the guy who just pulled up next to you and revs his motor. Cutout is out.
The Glasspacks do not make the ehaust noiseir, they do not do much to make it quieter either but do take away a few decibles and help rid that drone that 3" piping can cause.
A true resonator is simply done with chambers and no packing and are very expensive and I have not seen a true resonator carried by anyone, Summit or Jegs carry them. They are made to get rid of the drone.
I do not have to pass any emission inspection.
I run both race and unleaded fuels. I don't mind switching to unleaded and get a Random Technology cat but that may not make the car quiet enough. The trick is to make it quiet yet not choke power. Random Tech cats do not choke power.
I want it quiet because I am anbout to turn 53 and my noisy car days are past. I prefer the stealth approach so all they hear as I pass them is the scream of the turbo!
The dual exhaust would look cool. Could get expensive if done correctly.
Once I check on the availability of NOS octane booster that will make the cat decision a no brainer as the NOS raises the octane 7 octane points or 70 points as most of those products that say 7 points mean .70, not 7.0.
If Advance can indeed get it as shown online then I get the cat and see what that does and go from there. Thanks for the advice and questions. Mark
PS: I just bought 5 gallons of 112 octane, $35. Costly!

 

[Tom N]

Trying to rig up a dual exhaust from the cat back will add quite a bit of weight.

 

[97gstnick]

man, dont listen to what anybody says when i comes to stupid comments or opinions. i was thinkin about doing this too. but im just not sure about it. if it is not hard to do, then do it! i bet it will look good.

 

[90AWDTalon]

Once I check on the availability of NOS octane booster that will make the cat decision a no brainer as the NOS raises the octane 7 octane points or 70 points as most of those products that say 7 points mean .70, not 7.0.
If Advance can indeed get it as shown online then I get the cat and see what that does and go from there. Thanks for the advice and questions. Mark
PS: I just bought 5 gallons of 112 octane, $35. Costly!

About a year or so ago SportCompactCar sent different octane booster off to be analized. The advertised 60 or 70, the one I have used was 60 and that was the off road racing formula, is probably if you start with 87 octane. The results ended up being 94 or 95 octane when mixed with 91 octane pump gas.

 

[sweet97]

Odd. The NOS brand is an off road version but i will have to test it to see. Inhave 100octane year round but that is $5.25/gallon.
I am not concerned about weight. i have added carpet padding from my house under the rear seat and hatch area, 2 layers. Also sprayed undercoating under the rear wheel wells. Woud like to do the whole undercarriage but would need a lift! mark
PS: I'll try the advanced technology cat first. However the dual system would start by the rear differential and cross over there, check it out with your car's ezhaust.

 

[1stGenRocks]

i have duals on my 1ga. Fit without any extra modding. 3 inch back to just before the diff and then it splits to dual 2.5

 

[compression]

i dont have duals but when i did my 3" exhaust turbo back i made it come out of the left rear instead of the right, it was much easier. the only thing is the exhaust rests on the gas filler hose which is rubber

 

[staticbrainwash]

1ga is going to be much much easier to run duals on because it doesn't have any set designation as to where the exhaust should be. BUT, if he's got a body guy willing to match him up a slot on the left side. . . I say go for it.

As for octane booster, i'm a little iffy on that stuff. Are they really THAT worth it?

Poster ^^, just a hunch, but you MIGHT want to move that exhaust off of that filler hose.

 

[aero_sallee]

Poster ^^, just a hunch, but you MIGHT want to move that exhaust off of that filler hose.

I'd wrap it with some thermal wrap there.

 

[staticbrainwash]

^^ Thats good too!

 

[Incan]

1stGenRocks is that quiet or what? I want the cops off my back. i have a cat, resonator and some kind of V baffled oval muffler. it still drones way too much

 

[Gideon Talon]

ok so heres the deal, i upgraded my exhaust system to a bosal brospeed dual tip 2.5" exhaust system, then i proceeded to get a black vibrant dual tip muffler because i wanted my car to be black on black, now here the part you all are probably going to flame me on. I wish to do a Y pipe setup for dual outlets, yes i know it is pointless, but im ocd, and i want symmetry. how will adding another muffler affect the loudness, and tone of my exhaust note? I value everyone's opinion so if you wish to flame me for the exhaust i suppose i dont mind

 

[Spoolin18]

I don't think it will affect tone, or loudness. I have heard supras with tru duals, and duals going into one muffler than flare out to duals. I love the sound of 2 supra v6 heads going into one muffler. It just sounds badass. A 4cyl, I don't think will have much affect. It will also be a chore routing exhaust tubing, IMHO more than its worth.

 

[donswan]

The only time you'll ever get a so called dual exhaust is if you have a "Y" pipe since it is a 4 cylinder and it runs off of one manifold. Also it is not nessecery for a 4 cylinder to have duals do to the air flow and that if it was made to have duals they would have put them on the stock car or you'd see more of them.

 

[j91eclipse]

i have dauls on my 90awd and i love the hell out of it...you know when iam on it,thats for sure..pics are in my profile if you want to look