[longbarrel]

Hello all!

I've been reading all about mods and specifically true dual exhaust on 4.0's on the forum. I think I decided I want to mod my 'stang in this order: true dual (open up exhaust before adding air with CAI), then CAI, then tune...

I love the sound of Flowmaster American Thunders (thx for all the sound clips!!) and I was dead set on getting one and only one for my 4.0...until I did my oil last weekend and checked out my exhaust! It seems a crime to funnel both exhausts into a y-pipe, yep, it's coming out!

So here is my scenario: I was shopping online for true dual kits, I noticed the Pypes True Dual Catback w/X-pipe, which goes for a modest $450 @ summit racing...Very sexy getup but I want to use the Flowmaster mufflers! Has anybody sucessfully used these mufflers with a x-pipe setup? Maybe pieced together? What works and what doesn't?

Any advice or installation pointers would be greatly appreciated! I plan on doing this myself btw, I have a set of 12,000lb. rhino ramps that got my front end pretty nicely up to change oil, will I need to lift my car up to do the whole deal?

Thanks fellas!

-LB

[Black05Pony]

wally05 had a Pypes catback system with an X pipe and he ran it with Flowmaster American Thunders on his v6 mustang. As far as I know there was no custom fabrication involved to make the parts work together.

You should know how to weld if you're going to install something like this. I also wouldn't use Flowmasters with an X pipe because you're probably going to end up with a pretty raspy sound. Magnaflow or Borla will give you more of a deep sound and don't accentuate the nuances of exhaust as much as Flowmasters do and may be better suited for X pipe applications.

[big8ter]

i have magnaflow duals with a custom h pipe and i dont get the raspy tone at all

you can keep you pypes with flow masters just throw a h pipe instead of the x and you should be able to rid the set up of the raspy sound i got my h pipe from jegs.com for 52 bucks

[Black05Pony]

I was saying that X pipes and Flowmasters on their own are pretty raspy so I wouldn't put them together unless thats really the sound you're going for.

H pipes typically give a more mellow sound and Magnaflows are the same way.

[longbarrel]

Thanks!!

Hey Black05Pony,I noticed that you have the single Flowmaster. How does that work for you? Did you notice any performance boost by itself, or with a CAI/Tune? How do you like the sound?

[amustangrocks]

i went with the same plan, i pc`d the exaust first, i went stainless jba h pipe and over axles,gt muffs, then i got the demon coil and wires, then the cai/tunes. i had to get the car up in the air pretty high on stands to swing the h pipe into place after cutting the y pipe.