A friend of mine has a v6 mustang and was thinking about putting a duel exhaust kit on his car. He suggested it to someone and they told him he would lose power. Is this true? I wouldn't think so.

[Vortex]

no.. you may actually gain some. anything to help the engine breathe better will give you more power.

[Ron]

I did it to my little six, and it helps.

[Glen]

You should see a gain of at least 10HP on a pre 99 stock V6

and 15-20HP on a 99+

It also enhances other mods to the car.

Well worth it

[SVOChic]

I just recently inherited my mother's V6 and I'm wanting to put duals on it. Can you guys recommend a muffler that will give it a deeper, throatier sound? I've been told Turbos give a good sound on the sixer's, but any other opinions would be welcome.

Thanks.

[milw96cobra]

Dynomax Ultra Flow or any Mac muffler.

[kscoyote]

Originally posted by tkovacs
A friend of mine has a v6 mustang and was thinking about putting a duel exhaust kit on his car. He suggested it to someone and they told him he would lose power. Is this true? I wouldn't think so.

If the pipes are TOO large, the lack of backpressure can lower your output, but a set of GT's or other specialized pipes should be fine . ..

[SVOChic]

I was thinking of putting Mac's on the V6, as I have them on my SVO and I love the way it sounds. Everyone now is putting on Flowmasters and the Macs sound so much different.

[Ron]

I have Borla's on mine, but I think that the Macs make a better sound.

[buckeye43]

TKovacs & SVOChic: Both of you should consider GT take-offs. TK, the GT's are the proper pipe size to keep the loss of torque to a bare minimum while giving a small increase in HP. Plus the fact that they are SS, which means they'll last "forever"

SVO, you could replace the stock GT muffs if you choose, but why, they are allready welded to the pipe complete with hanger arms (you provide the passngr. side muff & pipe hangers) and very nice polished SS tips. As for sound they have a low rumble that is very much unV6 like, me likey.

I got mine from Midwest Mustang , they are very nice people to work with and they get their product out very promptly, now if UPS worked as fast you'd have them in 3 days flat. Mine spent more time in Kansas than on the road, but still a week ain't bad.

[redstang]

Should I get the Flowmaster dual exhaust kit or the GT take off kit for my 99 V6 ford mustang 5-speed?

[Monkey Boy]

The Flowmaster dual exhaust for the V6's isn't a true dual, it connects to your stock y-pipe and then splits into two. To get true dual you will either have to get a GT take-off exhaust with the GT h-pipe included or a pacesetter h-pipe adaptor and any GT cat-back. You can lose bottom end horsepower if you open the exhaust too much. Long tubes and an offroad h-pipe would be overkill for a mostly stock V6.

[StangerInOKC]

Originally posted by kscoyote


the lack of backpressure can lower your output,

Actually Backpressure does nothing for your car. It would honestly be better to run open headers if you could. I have been told by people that having backpressure doesn't do anything for your car. Under certain circumstances yes it would help but, the better your heads flow the more power your motor can make correct?

[Monkey Boy]

Backpressure hurts your top end power but helps with low end power.

[kscoyote]

Originally posted by StangerInOKC
Actually Backpressure does nothing for your car. It would honestly be better to run open headers if you could. I have been told by people that having backpressure doesn't do anything for your car. Under certain circumstances yes it would help but, the better your heads flow the more power your motor can make correct?

That's true with non-computer controlled cars, but the computer needs backpressure to operate at its best . . . unless the OBD program has changed since 1998 . . .

I know it was possible to go too wide on my 289. You lose a LOT of torque, but your hp numbers increase w/o restrictions, (pre computers). ..