Okay I know that upgrading your exhaust system can be benifecial(sp?) to Horsepower and to Gas Mileage. There's also a Downside right? Less torque. Well when normal people upgrade thier exhaust they replace the muffler and Maybe add Duals, Right? Today I saw a 99 shovie on the road with not one,not two, not three, but SIX yes SIX exhaust pipes. Three on each side. Whats the deal on this idiot? Talk about no towing power huh? Shovie owners really know their trucks don't they

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98 F150 2WD,Bright Red, Regular Cab, 4.2, 3.55, Superchip, 3 Inch Bullseye Lift Spindles, Manik Grill Guard,Nerf Bars, Vent Visors, Fog lights, Kc Lights, Alpine CD Player, 2 Kenwood Amps, Tinted Windows. And Coming Soon: 3&1/2 Inch Fabtech Lift Kit, 16x8 American Racing Baja Wheels Wrapped With 33's

 

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[This message has been edited by Ford man (edited 11-14-1999).]

 

The "three" exhaust pipes are probably just exhaust tips. The "tri" exhaust tip is about as lame as those chevy ones that are in the shape of a chevy logo.

Blake

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Proud owner of a Black 1997 Ford F-150 XLT 4X4 SC StyleSide, 5.4L, Auto, Electronic 4X4, Tow Package, TuffLiner Bed Liner, K&N Air Filter, Air Box Mod, Straight Pipe Exhaust, Off Road Package, rest..well..bone stock!

 

I agree with Blake, like the bowtie tips it sounds extremely lame.

The key in choosing an exhaust system is matching it to the engine. What matters is flow, or amount of backpressure, whichever you want to call it. Too much flow, or too little back pressure, will hurt low end torque/power because it moves the engine's powerband up in the rpm range. A single 3in exhaust might be great for an engine.....but change that to a dual 3in exhaust and the low end grunt will dissapear completely due to the excessively low backpressure. Likewise, duals with a relatively small pipe might be much better than a single large diameter pipe.
Didn't want to go off on this but just clear up or set down the basic general rules of exhaust systems 101.
Being a GM fan, that SIX tailpipe Chevy almost made me lose my dinner. That must have been disgusting to see....

 

If this torque-loss issue is significant and is tied to exhaust backpressure, it seems to me that some bright boy or girl might make some cash if they were to develop an exhaust gate that was tied in to the engine's RPMs. For example, when RPMs are low only one 2½" or 3" diamter exhaust pipe is open from the muffler -- when RPMs hit a certain threshold (say, 2500) a second 2½" or 3" exhaust "gate" could open.

I don't know, what do you think? Is this feasible or am I just talking out my @$$ like I normally do? I'm too lazy to try to make a marketable product, if anyone makes one of these and makes $$, send ½ to me c/o F150online.

Jim

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'99 F-250 LD 5.4L SC XLT in White/Silver (w/ EVERYTHING 'cept leather and engine block heater) -- added: SnugTop Hi-Liner & carpet kit, Donnelly mirror, more to come... (new shocks and side bars are next)

 

JHerron,
That's an extremely interesting idea.

Mark

 

I would love to pull up along side a truck with 6 tail pipes. A good rolling laugh always makes me feel better

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97F150 XLT SC 4x4 Flairside 4.6 V8 5sp Dk Toreador Red, 3.55LS
ARE tonneau cover, p255/70rx16 tires (came w/235), Superchip
Pioneer CD w/4 Polk Speakers & Clarion APA5240amp, skid plates
bed liner, side window deflectors, reese hitch, K&N air filter
40s-2chamber Flowmaster, Bosch +4 spark plugs, rustproofing
Better Built Stainless nerf bars

 

Well that dont make no sence. Where I come from trucks are made to haul stuff not azz. Why in gods name would you reduce your ability produce low-end torque for a less than 2% h.p. gain - Furthermore, in a truck that already delivers a substantial amount of h.p. Thank you for the info. I, now, am not going to spend the 500 green George Washingtons just for the pleasure of reducing my torque. Isn't torque what pulls / pushes you up hills and turns the wheels when your trucks fenderwells are full of stiff mud.

HELP ! ! ! Am I the only one that sees this.

[This message has been edited by ranch hand (edited 07-15-1999).]

 

JHERRON,
Your idea is good but too late. Go to stage.pint.com/clients/nology/home.html and click on products, then look for SHOTGUN T.R.EX and click on the picture. I think you will find it very informative.
Later and God Bless!!!

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Jim
Bright Red, 97 f-150 SC flareside,4x2,4.6,auto tranny, Mobil-1, Superchipped,Supercharged(Powerdyne), .999 tuned TPS, 3 chamber Flowmaster with custom dual outlets at bumper, JBA headers, Hellwig swaybar, steel cowl induction hood(non-functional), Magnecor 8mm wires, Plat-4 plugs, , A.R.E. hard bedlid, Laverne nerf bars, American Racing 8x16 with 315-55-R16 B.F. Goodrich Sportruck TAs, 4.10:1 Precision Gears, ,Monro-Matic Plus shocks.

 

Wow, that was fast. Those guys at Nology stole my idea, designed the product, got it through R&D and production, and patented it all since I mentioned it on this board yesterday.

Chaplain, thanks for pointing that site out to us. Some cool stuff there...

Now, does it work? Is it worth the ~$300 to have your exhaust backpressure optimally tuned? If anyone has tried the "Shotgun T.R.EX", please let us know your results with it. Of course, my product would have been called the "dantheman" -- named after everybody's favorite-pollution-belching-hole-that-needs-to-be-silenced.

Gotta go, gotta ask the Nology guys for my check for ½.

Jim

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'99 F-250 LD 5.4L SC XLT in White/Silver (w/ EVERYTHING 'cept leather and engine block heater) -- added: SnugTop Hi-Liner & carpet kit, Donnelly mirror, K&N filter, more to come... (SuperWhite 9007 bulbs, IAS shocks, and Westin side bars are next)