yes definitely they will use every bit of pipe from the muffler back as long as youre keeping two tail pipes, they can use them for true duals or si/do and just mount it right up. i went from si/do 40 series to true duals and they kept all piping from the end of the muffler back, and then ran two separate pipes towards the front of the truck after puttin the two new muffs on.
So youl be paying for ''muffler forward'' piping

 

Sent you a pm

 

95'F-150. Judging by your name I thought you had a 1995. Thats how the un-ability to run true duals would make sense because in the '96 & older trucks they had two cats that were in the intermediate pipe, so they would have to be deleted and hi-flow cats mounted before the Y. But having a 2001, yes all of your cats are before the Y. True duals is a simple install there.

 

Ya i had a 95 for my first truck. 2wd f-150 with a 351 windsor. Baby would scream. But i had a true dual set-up on that truck. But when i got it, it already had it on there so i just had to replace the mufflers so it wasn't a big deal at all.

But yeah now i have a 2001 f-150 5.4 off road. Dumped a lot of money into this truck. But i found out why the guy said he couldn't do what i thought i was asking for. See i had my mom set-up the appointment and give the details because i was in high school then and had baseball practice till 6 everynight. And she told him i wanted the cats cut off. Which wasnt what i remember saying but anyway thats why he couldn't do it. Makes since now.

 

I'm in the same boat here I want mine louder also I have the same setup.. Don't know much about trucks always drove little cars the guy at the shop said he couldn't do it so I left it at that.... But now I'm going this weekend to get it redone... can you tell me how to tell him to run the duals??? I want mine alittle louder also.. thanks

 

By the way my exhaust tips come out right behind the back tires at a angle..
I thought by cuttin the tips off it would make it louder boy am I stupid..lol

 

Any ideas???

 

I'm not quite sure what you are asking? Do you already have an flowmaster exhaust installed by a shop? If so, what are you looking to do? I apologize but I'm just not sure what you are asking.

 

Yes I have a flowmaster 40 SI/DO with the tips ran out behind the back tires at a angle.. untill I cut the tips off thinking it would get louder i'm stupid b/c it didn't get louder.... I just want it louder

 

Maybe consider adding hi-flows and having tips welded back on. Darren knows the various part #'s for the maggie cat's that are semi loud and those that are near catless sounding.

 

my exhaust is ran just like yours with a flowmaster 40 and I would like to have it louder.

 

Maybe try hi-flow cats. That woulds still keep your truck legal if you are not in CA I believe.

 

I live in alabama not a problem here with emisssions

 

I have to head to bed, but I am sure Darren will chime in later tonite or in the morning. I know that you can phyically remove your rear cats and weld piping in their place, but there is no guarantee that you will not throm a CEL. So to be honest, I think Hi-flows would be a better choice because it gives you two options for loudness... a bit louder than what you have and then near catless sounding ones. That is just me, but see what Darren says. Have a good night.

 

well went and got it done again today and I got the flowmaster cut off and put a Y pipe in its place and I love it just alittle bit louder that is what I was looking for.