single or dual?

gforces69 · **single or dual?**

hey everyone quick question... i have a 04 v6 stang no mods except i added a magnaflow muffler. i like the sound.. not too loud and sounds just right(deep). does it make a big diffrence if i go duals or will the straight through single magnaflow muffler work performance wise? it does have more pickup since the muffler swap. i heard a v6 mustang with duals i dont know what kind of mufflers he had but it sounded terrible! thanks!

Danger Dude · 08-20-2004, 06:40 AM

Well with a stock motor and you have no mods really the answer is no. The only difference is the sound. as good as you think it sounds it would sound twice as good with duals. The only real performance increase comes when you add engine mods which requires duals so the engine expells exhaust better to help it breath better.

kaper232 · 08-20-2004, 06:46 AM

Just make sure you trash the Y-Pipe

gforces69 · 08-20-2004, 08:05 AM

thanks for all your help!

kaper232 · 08-20-2004, 08:47 AM

Good luck with modding your Mustang!!

97Stallion · 08-20-2004, 08:52 AM


Quote: Originally Posted by kaper232 Just make sure you trash the Y-Pipe

I kinda disagree with this. I think it all depends on a few factors.
1. where do you live?
2. How much do you have to spend?

If you live in a Smog-state then cutting the y-pipe is a reasonable idea because buying some high-flo cats will cost a bundle. Nearly $350. For $30 you can get your Y-Pipe cut and get a set of flowmasters and the rest of the dual exhaust manufactured. If you don't live in a smog-state, then ditching the cats is a good idea and replacing them with an O/R H-pipe. Now if money isn't a subject, then more power to ya.

**SpectorV** · 08-20-2004, 10:18 AM

once you get all the bolt ons you can convert to a bolt on dual exhaust (not as good as true but with just bolt ons its ok) if you want to go farther than just simple bolt ons then buy a dual exhaust kit from a 99 up gt or pre 99 gt depending on if you use the gt rear bumper and then buy an adapter pipe to weld in so you can bolt up the cat back or replace the H pipe (probably not needed though) bolting on the exhaust is recommended so you can remove it easy for access to the tranny and such if you have welded on exhaust (as i do.... ) its a pain if not impossible to get to some areas of the car with out cutting the exhaust off.

Monkey · 08-20-2004, 04:23 PM

exhaust is overrated... I was running 13's with stock single exhaust

Danger Dude · 08-20-2004, 04:31 PM


Quote: Originally Posted by Monkey exhaust is overrated... I was running 13's with stock single exhaust

Damn Monkey you have a car with an engine that can breath through a straw

97Stallion · 08-20-2004, 04:32 PM


Quote: Originally Posted by Danger Dude Damn Monkey you have a car with an engine that can breath through a straw

I hear that!

Monkey · 08-20-2004, 06:44 PM

that was on the V6 stang. (granted the evo runs 13s stock too, but it is also a 2.5" single exhaust stock)

KyleUSAF · 07:49 PM

speaking of duel exhaust,
I checked at a local muffler shop about getting custom duel exhuast from them and it seems pretty good, but I need to check on something....
I asked him about mandrel bends and he said they don't do that. He also said that they do not increase performance, they are just for looks. Is this true?

btw, a body shop can't just cut a couple of circular slots out of the bumper for the tips (on the v6 bumper) can it.
Thanks,
Kyle

97Stallion · 08-20-2004, 08:53 PM


Quote: Originally Posted by KyleUSAF speaking of duel exhaust, I checked at a local muffler shop about getting custom duel exhuast from them and it seems pretty good, but I need to check on something.... I asked him about mandrel bends and he said they don't do that. He also said that they do not increase performance, they are just for looks. Is this true? btw, a body shop can't just cut a couple of circular slots out of the bumper for the tips (on the v6 bumper) can it. Thanks, Kyle

No, they do not use madrel when they bend the exhaust. They use a hydraulic press and it forms the tubing that way. As for performance, that's not true either. Dual exhaust works, no matter what the guy tells ya. It works by allowing the exhaust gases from the engine to escape quickly and relatively freely. Now if you have a 4 banger, dual exhaust will most likely hurt you. But if you have a "big block" V6 like we have, with a few mods, the dual exhaust is your friend. And finally, a body shop can cut some slots out for you if you want, but it won't have the finished look like a factory GT has.

KyleUSAF · 08-20-2004, 08:59 PM

oh, thanks for the info, i have a 2000 v6 5spd...the guy said the mandrel bends dont increase performance, not duel exhaust in general will not increase performance...
thanks,
Kyle

97Stallion · 08-20-2004, 09:02 PM


Quote: Originally Posted by KyleUSAF oh, thanks for the info, i have a 2000 v6 5spd...the guy said the mandrel bends dont increase performance, not duel exhaust in general will not increase performance... thanks, Kyle

OK, in that case yes, the mandrel bends are pretty much just for looks. On high power applacations, mandrel bends do come into play, but your V6 most likely will not see that much power. And besides, if mandrel bent tubing can't be found, you can always increase the size of your exhaust tubing.

KyleUSAF · 08-20-2004, 09:34 PM

i could get his non-mandrel bends with what he called "turbo" mufflers for $210, or his non-mandrels with flowmasters for $310 (installation included), or i could get the mandrel mac cat-back for $323 without installation...any suggestions?

Danger Dude · 08-20-2004, 09:55 PM


Quote: Originally Posted by KyleUSAF i could get his non-mandrel bends with what he called "turbo" mufflers for $210, or his non-mandrels with flowmasters for $310 (installation included), or i could get the mandrel mac cat-back for $323 without installation...any suggestions?

If he will give you Dynomax Turbo's or Thrush Turbos it would be a deal or Flowmasters would be fine

97Stallion · 08-21-2004, 08:37 AM


Quote: Originally Posted by KyleUSAF i could get his non-mandrel bends with what he called "turbo" mufflers for $210, or his non-mandrels with flowmasters for $310 (installation included), or i could get the mandrel mac cat-back for $323 without installation...any suggestions?

if you're talking about MAC's new cat back exhaust where it is direct bolt on for stock 3.8's, I think you'd be wasting your money. You can get a dual exhaust 2 ways. I noticed you live in TN, so an O/R H-pipe is outta the question. So you can either get some high flo cats and get a GT take-off cat back exhaust for a nice clean look exhaust system which would run you about $500, or you can get the muffler shop to make one for you for either price. The pros of the high-flo cats system is that you'll have a less restrictive exhaust system, and if any tranny work is in the future, you'll be able to remove the exhaust for ease of access. The down side is the cost. As for the cut and weld exhaust, the pros and cons are almost opposite. The pros are the low cost, you'll still have 4 stock cats for emissions, and you'll have a true dual exhaust system. The cons are that the exhaust will still be somewhat restrictive, and tranny work int he future will be a pain with the exhaust in the way.

Finally, do some research on how mufflers sound. I know a few people that spent 1000's of dollars doing this.

YellowStang · 08-22-2004, 10:46 PM

I just got a 2000 V6 today and the previous owner put duals on it, a friend of mine said it has around 220 hp with the dual exhaust, is that a good estimate or not?