well... i am looking to up my fuel economy.. i am doing both of the above, but one at a time... so which do i do first.. Do i put true duel flowmasters or a tonno cover.. which one is going to do more for my gas mileage..i have a 97 flareside lariat with 4.6.. anyone put the flowmaster in from the headers ?? what did it do fo you and whats it sound like.. thanks for the help

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1997 F150 Flareside Lariat Supercab.. Maroon over Beige..JVC El Kameleon CD Player.. Pretty much stock for right now.. will soon change

 

A Tonneau cover should increase your gas mileage 20%. I would imagine a Flowmaster system would have similar results. Let's see, look cool, or sound cool. Heck, look cool while sounding cool...do both!!

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1997 F-150, 4.6, automatic, Dark Toreador Red, Supercab, Flareside, 4X4 Off-Road, Towing Package, Chrome Grizzly Wrap Around Push Bar, Ford bedliner, Code Alarm Sure Start RVS remote starter, and Lots of TLC!! (Besides being an F-150 nut, I am a Ford auto technician.)

 

Was that 20% a typo? I know the Ford brochure indicates the tonneau cover increases mileage, and I figured they wouldn't say that unless they had verified it somehow. But 20%? I thought it would be more like 2%.

 

i was under the impression that you get about an extra 3-4 miles per gallon.. which in a 30 gallon tank would be between 90 and 120 miles MORE !!!!.. so i dont know which do believe... and as far as doing both.. i am going to.. but its one first then the other.. i wanna look good and sound good.. i already did the K&N Filtercharger thing.. now im just looking for the expensive things to pick up.. and they have to be done one at a time.. also.. is a superchip a waste of money ???

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1997 F150 Flareside Lariat Supercab.. Maroon over Beige..JVC El Kameleon CD Player.. Pretty much stock for right now.. will soon change

 

NJ_Moose
The tonneau cover will help... But I doubt that you'll get 3-4mpg increase.(I didn't) If you keep real good fuel mileage records you'll notice it. As far as the Flowmaster is concerned if you drive anything like me it'll probably actually cost you a little mileage..(Stepping on it harder than you normally would so you can listen to the sweet music.) {YMMV}

Mike

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99 Lariat S/C 5.4 4x4 Amazon Green/Harvest Gold 3.55/LS K&N Filter Mobil 1

Oshkosh, WI.



[This message has been edited by MikeS (edited 11-10-1999).]

 

hey moose, hows that thing gonna pass NJ inspection? well, OK i do know how $$, hehehe. but still you gotta rumble in line for 3hrs before you go to the "certified" inspection center. arent you afraid of starting a riot?

 

I did the exhaust.

I vote for the tonneau

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1999 F250 SD CC, LWB, 5.4L, Auto, 3.73, 4x4, Power TT mirrors w/ marker lights, White, Full Tint, PendaPro SR, FlowmasterDelta 40 series, K&N filtercharger, Superchip(Airbox removed for a second try, maybe in the winter it will be advantagous?)

www.angelfire.com/pa3/spaceace/index.html

 

Well, as far as the inspection goes.. its not always money.. its more who you know.. i was thinking about the tonno more now also.. i like the sound i have now, but i want the looks and the gas mnileage to improve more.. so any other imput would be appreciated.. i am probably doing it next week

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1997 F150 Flareside Lariat Supercab.. Maroon over Beige..JVC El Kameleon CD Player.. Pretty much stock for right now.. will soon change

 

NJ-Moose,
I did the tonno first. People see it first, it adds looks better than the exhaust. You cant here the exhuast when its parked but you can see the tonno. As far as gas milage goes, I dont have a clue to as which will help more. I plan on doing exhaust but Im doing the chip-thing first (its on its way!).

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Red,1997 XLT 2WD, 4.6 V8, Auto
Stepside shortbed, painted to match hard tonneau cover, bed liner, bug & rain deflectors

Future Mods: K&N air filter (of course), air box mod (of some sort) Superchip, side steps, lift or leveling kit

Check out my new website at:
www.homestead.com/_JJK/ford.html

 

I did both and by far, I get the most comments about the Snuglid hard tonneau. I, too, have a flareside and people tink the tonneau is standard equipment. One plus is that it is lockable storage and keeps things outta sight. The Gibson Supertruck exhaust is for me...most people don't even know about it. As far a mileage and performance increases, the verdict is still out...don't really notice much improvement in either. FYI, both mods will set you back about $900-$1K. HTH

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'99 F150 SC, 4x2, Oxford white, flareside, 5.4, 3.55 rearend,
bodyside mouldings, Snugtop hard tonneau, K&N dropin and airbox mod.
Duraliner drop-in (gave up on the Penda Nascar). Gibson Supertruck
No door cracks yet at 3K!!!

Future mods: 2/4 lowering, bra and some Roush stuff.