ok guys ive been having this crazy thought. i dont know if what im thinking about is true or not but heres what im thinking. if i swap to magnapacks would that make my cams more noticable than the dual in/out muffler what my thoughts are the exhaust notes are going thru the x pipe traveling down to the dual in/out muffler getting mixed up in the muffler and then splitting up again so if i had two magnapacks the exahust leaves the x pipe it will stay in its own pipe till it exits therefor im thinking the lope from the cams would be alot more noticable? lets here yout thoughts if im crazy or not lol

 

do it. DO IT

 

What you think of my crazy theory lol

 

complete lunatic!






BTW just do the packs!

 

If you want to enhance the lumpty-lump then do two mufflers with true duals and remove the X.


The X let's the exhaust pulses beed off some in between the pulses in the other pipe. By doing so it lessens some backpressure by allowing gasses to use those longer spaces between the UNEVEN firing of a V-8 which is what makes a V-8 sound so different from a busy V-10 or V-12 or buzzy V-6 or straight 4.

Look at the numbering of the cylinders, and then the firing order.

Numbering: 1 is right front 234 going straight back, then 5 is left front 678 going straight back.
Firing Order 5.4 Ford:

1-3-7-2-6-5-4-8-1-3-7-2-6-5-4-8-1-3-7-2-6-5-4-8

So, change numbers to R or L for bank (or pipe) and what you have is:

R-R-L-R-L-L-R-L-R-R-L-R-L-L-R-L-R-R-L-R-L-L-R-L

See it ????


An X pipe or a DI/DO with built in X lets those two sides fill in each other's gaps or pauses ....



I've never used an X in my years of adding true duals. I've seen dyno numbers, the X just doesn't add a lot of power, certainly not enough that you will ever know it.

Your decision, what do you want?

 

Agreed

Dually agreed!

 

Thanks for the information on the firing order. I have always done an X-Pipe with two mufflers to even out the sound, not really to add power. I am glad to hear my reasoning is still valid...

KR-Texas

PS. Is it the same firing order for the 6.2L?

 

Just do it.

 

Ok guys i'll do it should I leave my x pipe or remove it?

 

Yes Leave the X pipe.

 

I can't hear it from where I sit so I don't care ...
... but you asked the question:
If you want it smoother, leave the X in.

If you want that V-8 cacophony to be more clearer, remove the X.

I know that the X is the big rage. I have heard them with and without. Myself, I prefer the sound of a true dual system over that of a siameesed system if given a choice.

Adding that X to a true dual system which before was two seperate and distint systems, each serving one side of the engine ..... ties them together at a point of some restriction and in effect, siameeses the two into one at the point of the cross, melds them into one larger area briefly and simply providing two exits from it so that it is no longer a true dual exhaust system ... though it is still a good performance exhaust if done properly.

If I'm changing exhaust to get the sound I like, the right tone, the right "hits" ..... an "X" is not in the mix.

I much prefer using an "H" style balance pipe if I'm gonna tie them together myself, no forced blending, more like a passive pressure bleed that way.

It's all in what you want and are able/willing to pay for.

 

ok thanks all looks like ill be ordering my magnapacks and having themn installed around the first of the year. if i like how the magnapacks sound ill leave the x in if not ill remove the x thanks again for your help keep the comments coming you guys are the best thanks.

 

To be clear, properly done so that it does not add restriction, an "X" does have it's place, it can add some power in a setup where maybe the pipes aren't sufficientlly big or there's some restriction like mufflers or just long tailpipes instead of a short 3" collector. It is not a lot of power and on a near stock setup like spoke of here, not something that's noticeable.

I'm not against the "X", I just don't prefer it.

The new 6.2 L Gas Firing Order is different from the 5.4.

5.4 is 1-3-7-2-6-5-4-8
or
R-R-L-R-L-L-R-L-R-R-L-R-L-L-R-L-R-R-L-R-L-L-R-L-

6.2 is 1-5-4-8-6-3-7-2
or
R-L-R-L-R-L-L-R-R-L-R-L-R-L-L-R-R-L-R-L-R-L-L-R-

With a 90 degree V-8 block using 4 equally spaced crank throws, 90 degree each, as you map out the firings of the 8 cylinders through two complete revolutions of the crank shaft, you will end up with a power stroke every 90 degrees of crank rotation which is why the distributor cap of thiose with a distributor have the wires equally spaced .....
.... however as a result of it being a V-8 with two banks 90 degrees to each other .... and a crank with those 90 degree throws that lets you have that steady even smooth power ....
.... you will always have at some point, two cylinders on the left and two cylinders on the right that will follow each other in the firing order. The engine can move those two, but with that layout, he can't eliminate them.

Take this segmant from the 5.4 beginning where two lefts occur consecutively :
R- L-L-R-L-R-R-L-R -L-L-R-L-R-R-L-R
and compare it to the same segment point where two lefts occur consecutively on the 6.2:
R- L-L-R-R-L-R-L-R -L-L-R-R-L-R-L-R. They just moved the pairings.

There are no 90 degree V-8s with 90" crank throws that fire
L-R-L-R-L-R-L-R-L-R-L-R-L-R-L-R- etc

 

ill be waiting for videos!
mine are going on after Xmas sometime.