Looking to increase the pulling power of my 4.6L with 3.55 gears. Someone suggested a new Gibson Swept Side exhaust system would help a lot, does anyone agree with that? Also heard that you could lose low-end torque with an after market exhaust system, is that true? And how important is low-end torque when pulling up mountains?

Any help would be great.

Please don’t say buy a new truck with a 5.4L, I like my truck and plan to keep it for a long time.

Thanks

 

side sweeps and i dont think he,s happy with them...i,ll e-mail him and have him post back to you...

 

I want to say that Rocks has the Super Truck xhst and his old ears don't like it any more ( too loud )

I really like my SuperTruck xhst, but I think that you might miss the low end tq loss with your motor, dependng on what you do with the truck. I have the substitution of HP for tq for heavy towing, and I don't drag with it, so the minimial loss of tq is not noticable to me ( 5.4 w/ 3.55 ).

If you are after an increase in power, looking at a Gibson side swept xhst is prob a good thing, or a magnaflow I think is what others recomend.

The other item that you can consider is replacing the intake with a FIPK, and get rid of the Ford MAF.

I have a GMS MAFS paired with a K&N FIPK, and I am going to be testing a JLP air box with a WMS V Tube hopefully starting this week.

For all the people with the [hot air] statements, I have noticed that while moving, the intake temp to outside heat index is about 5* F different. From the 4 logs that I have taken on the truck to date, the only time that the intake temp has raised above 140* is while sitting in traffic for long periods of time, and having the outside ambient air temp in the 97* F and higher range ( heat index of 104* + ), and once moving it only take under 5 min to totally evacuate the engine compartment of the hot air, to obtain intake to air temp deltas of 5* or less.

Once I get the WMS V Tube and get it installed, I will be able to compare the intake temp deltas of the closed system to outside air temp, as well as the MAF flow rates ( suspecting this will be lower ).

While the every 11* of intake temp is 1 HP of loss, I am not seeing where this would even produce a loss of 1 HP, along with I am not sure of the MAF flow rate of the closed system.

Just some food for thought, and my current pontifications, until I get logs on the closed system.

Let me know if you haev any questions on this, I have athread on FIPK and intake temp in the engine forrum charting the progress.

14-SEP-02 is the Chicagoland dyno event, so I can test out where it is at ( don't have stock dyno numbers for my truck though ).

 

I have the magnaflow 3" setup on my 4.6L and I love it, it helps out a ton, I also got a huge MPG increase with the new set-up.
not to sure about the other set-ups out there. just my opinion.

Nate

 

I don't notice much inside noise with the supertruck. and i have a reg cab short bed at that.

don't think you'll lose anything any way you go.

i have the 4.6 w/ 3.55's....didn't notice any adverse effect, still very torquey

do recommend gibson any way you go.

hope this helps

 

And SSCULLY wins the big stuffed animal for attentiveness and reading comprehension...LOL. Sorry Texford...I guess I'll have to watch out next time we go shooting clays...

The SuperTruck does have a nice sound....but at 41 and single, most of these mature ladies aren't impressed with the low rumble as they cruze into nirvana with the rockmiester.
I have enough trouble explaining my Metallica, Aerosmith, Manson CD collection...LOL.


Rocks

 

I have the Gibson Super Truck exhaust on my truck. Love it, sound is good and no noticeable loss in torque.

 

I'd say the perceived torque loss due to a more free flowing exhaust system is an old wives tale.
Unless the computerized fuel management systems can't compensate for it.
I think they can.

Fwiw - every dyno chart I've seen on exhaust sytems charting a freer flowing exhaust with hot rod type engines - there's always a torque improvement in the lower mid-range and up.
The very low end stays the same or improves a small amount.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Mr. Rocks - if the ladies are willing to go places in your truck with you, then I'm sure they're not too worried about the sounds.

C9

 

I also have the 4.6 - 97 vintage. Where did you find the 'puter code for your Superchip?
I have the Flowmaster system duals out the rear and have many comments on the system.

 

I'm thinking of putting a aftermarket on my truck its a 2000 with the 4.6 with 56,000 on the clock I am thinking of a flowmaster system but will consider others.

 

I've had my Flowmaster 40 delta flow SI/DO with Magnaflow SS tips for about 3 to 4 weeks and love it!!

 

ROTF !

That kils me. Sorry had to bag early last night, vacation day today...put up high bay, Metal Halide lighting with dad, in a warehouse

You are only a hop skip and a jump from me, and you think you are old
Tell those ladies like it or leave it
If they don't like the truck, what the hell did they expect a Lincoln ower or maybe a cadi....it is not like you are 70

 

I have the 2001 SC. 4.6 w Posi Trak. It's superchipped and sports the K&N FIPK. My latest mod is the MAGNFLOW CatBack and I love it. My stock Y-Tube was in surprisingly good shape, so it's still there. Good sounding idle and strong at WOT. No killer drone at cruise. Next mod is probably a ProCharger blower; just located an experienced installer/tuner with dyno in my city.

 

Thanks for all the advise.