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1998 mustang v6 converting to dual exhaust

1826 Views 7 Replies 4 Participants Last post by  Silver J
I have a manual 1998 v6 and I'm going to convert it to a dual exhaust. Does anyone know if this will hurt the performance of the engine, hurt gas mileage, possibly damage the engine, and any other possible issues. I'm putting a catted x-mid pipe thats 2.5" in diameter that's made by pypes. The catback I'm putting on is the flowmaster american thunder with super 44 series mufflers. Any information will be great.
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you should see a slight improvement in power and gas mileage as long as you can keep your foot off the gas pedal lol. Who's putting it on? may need brackets to hang the passenger side pipes up though.
I work at an auto shop so I was planning on doing it with help from a tech.
Welcome to the site!! I have dual exhaust on my V6,s-good upgrade.The X is not needed on a V6,use a H.
I would have used an H-pipe but the site I ordered from only had the x-pipe for the v6.
1998 mustang v6 exhaust

Does anyone know the stock diameter of the exhaust pipes of the 1998 mustang v6?
It is 2.25.
Correct: 2.25" (or 2-1/4").

The V6 does not "require" any cross pipe, since it is even firing. Therefore, H-pipe (better sound?), X-pipe (faster flow?), or divorced/split are all options. Getting rid of the stock Y will net the most hp. :bigthumbsup
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