Looking for exhaust system for truck. Would like to have true duel exhaust. Any input would help decision.

 

I guess how loud you want it to be is one of the first questions.

If you like loud, as in NASCAR Truck series loud, get a Bassani "cat-back" for a Lightning. This is 2 SI/SO mufflers, X-Pipe and the tail pipes with the tips. Cost ~ 700.00 for the kit alone, not a drop in for a N/A 5.4L engine, so more work is needed. This also is dumped before the rear tire:
https://www.f150online.com/galleries...1916-50835.jpg
you might need some additional pipe after cutting out the factory Y pipe, and installing a 90* on the driver's side exhaust pipe.
If you have a Std cab, short bed, this would be a little custom pipe work, but not much at all. I currently have this on my SCrew, so there was an additional ~30" of pipe to be added to each side to get it to work.
https://www.f150online.com/galleries...1916-50279.jpg

The other option that will get you to this level of loudness is using the 4"x8" MagnaFlow mufflers.
If you want a bit quiter ( just above stock ) that is a MagnaFlow 14568. This is a 5"x11" DI/DO muffler.
I am moving my X pipe a bit closer to the 90* turn, and installing this muffler, as after 3 hours if driving the noise level is getting to me
So I guess starting out with what elvel of noise is a good place to start for the muffler choice, and then getting the muffler(s) is a good palce to start, along with where you want them to dump out at, and you can start to get some ideas on what to install.
APT should be along some time to fill in some more.

 

u wanna sell the mufflers

 

Thanks for the offer, but the whole kit was sold prior to me even calling Mike and ordering the MagnaFlow DI/DO muffler.
He is just waiting on me to get the new stuff installed.

 

why dont u like the bassani
do u think it would quieten up if i had longer pipes

 

It was great when I put it on, and when I am not having to drive it for 3 hours straight, it is great.

I am going with the larger DI/DO MagnaFlow muffer to cut down on the noise level, when I am having to drive 3 hours one way, with the few new accounts I picked up.
That is it. The few new accounts that I picked up are about 3 hours one way, and that is a bit much. If it was all under 1 hour, I would not even have thought about it, which was the case when I put it on.

This is the noise level, I don't notice the drone, or at least not yet. Chidiver was getting a drone from his 3" SI/SO Bassani.
My big concern is the sound level, which is due to the 5"x8" oval..I think.

 

i think im goin to get 2 aluminized bx mufflers that have all ss internals they said it sound the same as the ss mufflers just alot less mula with an x pipe

 

SSCULLY, and any others that want to weigh in on this one,

What is the big deal about the X-pipe. It would seem to this non-engineer type that having an intersection between the exhaust pulses would tend to create greater amounts of turbulent flow...is this not so?
Further, if the flow characteristics are more intimately tied to pipe diameter, then why not just the 3" pipes with as few bends as possible...trying to keep flow as laminar as possible? Trust that I know nothin' about engineering or laminar flow of exhaust gasses but I did pay attention in school...

 

There is only one true dual system which SScully mentioned. All else requires some kind of custom work. In fact, so does the Bassini on N/A 5.4L's in cutting out the OEM y-pipe. Some kind of crossover is recommended. X-pipes try to increase the speed of the exhaust gases or at least maintain it between each cylinder firing, bank to bank.

Wow, Steve, changing exhaust agian. Yet another ends up with Maganflow. I wonder for how long. Let me know how it turns out, if the noise level is cut down and how performance is affected.

 

The X pipe, when installed in heavy enough SS pipe, close enough to the 90* from the driver's side, actualyl creates a scavenger effect, that pulls gas through it. This is the reason for doing a X pipe over an H pipe or DI/DO muffler, which is an equalization process. To add to the complications, there are X pipe versions with 2.5" cores, and 3" cores.
If the gas cool too much, prior to the X pipe ( too far away, or use of Aluminized pipe ) then it is a complete waste, and should have just done a DI/DO muffler.
As for 3" pipe, that is what Larry has on his 5.4L, and he likes it, but he also took out the factory Y pipe, and installed a dual 2.5" in, 3" out Y, so he still had some custom work on the dump from the driver's side ( changed to a 90* ).
So if you are wanting a SI/SO ( DO ) muffler, then replacing the factory Y with a 2.5" in and 3" out is a good choice.
Going duals with 3" in and out is a no-no, that will do nothing but mess up the flow, unless you are putting out over the 600 HP area ( that was a joke, that might not even be enough HP to qualify for dual 3" for all I know that high up ).

Both seem to work fine in terms of performance, I know I lowered my 60' and 1/8 mi times from the G-Tech testing after taking off the Gibson ST exhaust. Was most of that from the X pipe and duals, or from the removal of the factory Y..got me, I don't know.

Let us know if that answers the question or not.

 

I'll let you know what I come up with, once the temp raises to the level it was at when I did my last G-Tech times.
I am guessing that I will raise my 60' times, just do to the design of the muffler, but I could be completly off on that.
This is the drop in replacement muffler for the stock L system, and Mike said it was slightly louder then the stock L system, which should be good.

Nice thing is once I get done with the system, I would be able to get the MagnaFlow 4"x8" mufflers and should be able to drop 2 of then directly in place of the DI/DO muffler, If I wanted to go back to the louder system, but I'll have to confirm that once I am done. If it looks that way, I could do a SS band clamp install, to make it real quick.
The 2 bolt flange style mounting of the output pipes on the Bassani don't allow me to do this very easy.
See if I am screwing up by the numbers or not.

Good to talk with you again.

Later Bro,

 

SSCULLY,

Is this X pipe you're talking about something that I can get by itself? I have a 98 150 Supercab shortbed 4X4 and I put true duals on it. I think it did lose a little low end, but sounds awsome. If I could get his X pipe and put it in just behind where the 90° bends are for the drivers side would it help my low end back up?

Thanks,
Matt

 

spintech makes a trual duals x-piped equipped system for f150's
www.spintechmufflers.com
or www.spintech.com-phil

 

I love my Spintech system. If I had to do it again I'd have paid the extra $10 and ordered straight from Spintech, Midwest speed (cheapest place online) has NO customer service and left me hanging for 2.5 weeks!

Magnaflow has mufflers that have a crossover inside, but like stated before, it's going to be located further behind and be of no real help. I read somewhere that if you paint the exhaust, the x-pipe should be where it starts to fade (heat will make it change color).

 

The X-pipe can be had from many vendors. I know that Magnaflow makes 2 different versions in the 2.5" inlet/outlet size. One has a 2.5" body, the other is a 3" body. Unless you have a very built engine, with the need, go with the 2.5" body size. Mike Troyer has them on his web site. I forget the p/n at the moment. these are the SS versions, the Aluminized steels ones are just 2 Y pipes back to back, and not worth getting ( I don't think Mike even sells then anymore ).

Sorry for the delay in getting back to you, work has been busy. The email did the trick.