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post #1 of 33 (permalink) Old 05-15-2008, 06:21 PM Thread Starter
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air silencer..

Would removing the air silencer increase my gas mileage?
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post #2 of 33 (permalink) Old 05-15-2008, 06:24 PM
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Sure would not hurt it , It will make your engine breath better

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post #3 of 33 (permalink) Old 05-15-2008, 11:04 PM
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It will help but not enough that you will be able to tell.
With gas mileage it's a lot of little things you do that will all add up.

Proper tune, K&N filter, lightening the car and Synthetic oil will help.
Sythentic oil is probably the only thing that will make a noticeable difference on it's own unless it's poorly tuned.

The best thing you can do to improve mileage is to tape an egg to your brake and gas pedals. Seriously, the way you accelerate and decelerate will make more difference than anything else you do.

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post #4 of 33 (permalink) Old 05-15-2008, 11:07 PM
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post #5 of 33 (permalink) Old 05-15-2008, 11:12 PM
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It will make your intake a little louder...that's about it.

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post #6 of 33 (permalink) Old 05-16-2008, 07:13 AM Thread Starter
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Thanks a lot guys.
I've already started changing my driving style some and it seems to be helping. I now have a combined mpg of around 23, better than the epa rating of 19.
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post #7 of 33 (permalink) Old 05-16-2008, 12:37 PM
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19 is the epa rating for city driving. I got a combined 28 mpg with mostly traffic driving. Drive the speed limit and youll see your mpgs increase.

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post #8 of 33 (permalink) Old 05-16-2008, 12:45 PM Thread Starter
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Originally Posted by Bay_Bird93 View Post
19 is the epa rating for city driving. I got a combined 28 mpg with mostly traffic driving. Drive the speed limit and youll see your mpgs increase.
my car is rated 17 city, 19 combined, 24 highway
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post #9 of 33 (permalink) Old 05-16-2008, 01:09 PM
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Originally Posted by Bay_Bird93 View Post
19 is the epa rating for city driving. I got a combined 28 mpg with mostly traffic driving. Drive the speed limit and youll see your mpgs increase.
I want to see independant proof of those numbers.
Even the lighter Mustangs with the same V6 and the Turbocoupes with the I4 don't get those numbers.

If it's true you are very lucky.

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post #10 of 33 (permalink) Old 05-16-2008, 02:04 PM
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Here is mine check out the MPG trend. But 28 mpg in the city is a bit high, Have not checked mine in the city but i can tell by the fuel gauge its not that high


Just got back with the bird on a road trip. Checked mileage 153 miles on 5 gallons = 30.6 !! This was flat ground cruise . 273 miles on 10 gallons =27.3 this was hills coming up I-81 in VA. How in the world ??? I still cant belive that. It was a steady cruise trip 75 MPH 2300 or so RPMs

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post #11 of 33 (permalink) Old 05-16-2008, 02:31 PM
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I get a combined of about 28. I drive a 90 mile commute round trip every day. I get a full week (5 round trips) before needing to fill up. I put roughly 16 Gallons in every fill-up.

90x5 = 450 miles
450miles/16gal = 28.12 MPG

Currently I have a stock tune (set up for the 3.27's). I'm going to get a tune on the car to REALLY make use of the 2.73's that are in the rear dif, and then see if I can get into the 30's.

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post #12 of 33 (permalink) Old 05-16-2008, 02:37 PM
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Cool josh ... I never would have thought that these 4.6s got that good MPG but cool that they do

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post #13 of 33 (permalink) Old 05-16-2008, 02:44 PM
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Quote:
Originally Posted by ThunderChecken View Post
Cool josh ... I never would have thought that these 4.6s got that good MPG but cool that they do
I'm hoping for better with a more conservative tune if possible. I'm hoping to get into the 30's. I've already backed off my acceleration curve. I accelerate about as slowly as a delivery truck on my daily commute, and use cruise to keep me at about 60 MPH where I can use it.

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post #14 of 33 (permalink) Old 05-16-2008, 02:45 PM
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yep with 2.73s you should get there pretty easy

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post #15 of 33 (permalink) Old 05-16-2008, 03:30 PM
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Quote:
Originally Posted by the_doug View Post
Would removing the air silencer increase my gas mileage?
Removing the air silencer will:
  • Increase your mileage
  • Increase your horsepower
  • Dramatically improve your 0-60 and 1/4 mile times
  • Increase your top end by at least 100 MPH
  • Improve handling
  • Increase airflow and give you that amazing exhaust sound you've always wanted
  • Make you more appealing to the opposite sex
  • Increase the size of your manhood
  • Cause you to win the lottery
  • Cause world peace
  • Save the whales
  • Reverse global warming
  • Free Tibet

Mods? Yea, I got mods ...
Air silencer delete, warp drive, dilithium crystals, flux capacitor, Slingshot Rubber band power adder, Moonshine & Gas, Leaf Blower Supercharger, Hamster Wheel & Hamster, Energizer Bunny generating 1.21 gigawatts, Mr. Fusion® Home Energy Reactor, hover conversion and a sextant celestial navigation system (The original GPS)
Best 1/4: 1,320 nanoseconds @ 670,616,629.2 miles per hour

"There isn't that much difference anymore between spacecraft, aircraft and modern automobiles..." - Keith Henry, NASA's Langley Research Center
See a list of my real mods and pictures of my car HERE. The true performance of my car was made possible by the Carolinas Crew Chief, RobertP at Rob's Tire & Auto.
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post #16 of 33 (permalink) Old 05-16-2008, 03:31 PM
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post #17 of 33 (permalink) Old 05-16-2008, 09:00 PM
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I never said 28 mpg city. I wish. I drive a total of 90 miles round trip to school and mostly drive freeway but hit traffic going to school and coming home. I got an average of 28 mpg and got a little over 350 miles with a quarter tank left. I probably could of got 30 mpg driving 65 the whole way with no traffic.

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post #18 of 33 (permalink) Old 05-16-2008, 10:11 PM
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Damn, you guys are getting some pretty good gas milage! My 3.8 na is on 1/4 tank and it's odometer reading is like 165 miles

What size is the tank on these cars?

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post #19 of 33 (permalink) Old 05-16-2008, 10:13 PM
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post #20 of 33 (permalink) Old 05-17-2008, 01:33 AM
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I can get about 30 to 34MPG out of mine. Thats in the city. Its totally stock as I know of.















But then again it is a focus.

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post #21 of 33 (permalink) Old 05-17-2008, 10:57 PM
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Quote:
Originally Posted by BlakTbird96 View Post
Damn, you guys are getting some pretty good gas milage! My 3.8 na is on 1/4 tank and it's odometer reading is like 165 miles

What size is the tank on these cars?
it's an 18 Gal tank, but about 16 Gal useable

1997 LX Sport 4.6L 2.73 , MODS=SCT tuned/J-Mod/Trans Cooler/Dyno max Cat-Back/NgkPlugs/Mac cold air/March UD's/FRPP aluminumcarrier3.73's(spare for strip use)/ PI cams + PI intake manifold w/adapter plate/ Mark VIII Convertor/80mm L-Maf/70mm TB/ Mark VIII 1 piece shaft/Cobra R' wheels/ Kumhos 235/60/16 - White leather w/ blue cloth seats - white face gauges in 95 cluster
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post #22 of 33 (permalink) Old 05-17-2008, 11:55 PM
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Quote:
Originally Posted by Trunk Monkey View Post
Removing the air silencer will:
  • Increase your mileage
  • Increase your horsepower
  • Dramatically improve your 0-60 and 1/4 mile times
  • Increase your top end by at least 100 MPH
  • Improve handling
  • Increase airflow and give you that amazing exhaust sound you've always wanted
  • Make you more appealing to the opposite sex
  • Increase the size of your manhood
  • Cause you to win the lottery
  • Cause world peace
  • Save the whales
  • Reverse global warming
  • Free Tibet
you have seriously lost it dude

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post #23 of 33 (permalink) Old 05-17-2008, 11:57 PM
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i've taken it down to just under a gallon on one scary occasion , so i'd say 17-1/4 usable lol

as for the silencer debate its just something to put in a modification list before any real work is done. also, there is waaaaaaaaaay too much discussion on this subject

-Matt
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post #24 of 33 (permalink) Old 05-18-2008, 06:08 PM
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I agree, I noticed no difference when I took mine out. I used to get avg of about 28 mpg mixed driving( NYC) but I went to change the plugs and I put in bosch plats 2s or what ever they are called and im down A LOT. so im thinking of going back to coppers but I wonder if anything else has caused this drop. and yes I am light on the pedal, dont go above 2k on acceleration.
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post #25 of 33 (permalink) Old 05-18-2008, 06:17 PM
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That's your problem Bosch plugs aren't worth a ****. Put some Motorcraft copper plugs back in it.

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Mods? Yea, I got mods ...
Air silencer delete, warp drive, dilithium crystals, flux capacitor, Slingshot Rubber band power adder, Moonshine & Gas, Leaf Blower Supercharger, Hamster Wheel & Hamster, Energizer Bunny generating 1.21 gigawatts, Mr. Fusion® Home Energy Reactor, hover conversion and a sextant celestial navigation system (The original GPS)
Best 1/4: 1,320 nanoseconds @ 670,616,629.2 miles per hour

"There isn't that much difference anymore between spacecraft, aircraft and modern automobiles..." - Keith Henry, NASA's Langley Research Center
See a list of my real mods and pictures of my car HERE. The true performance of my car was made possible by the Carolinas Crew Chief, RobertP at Rob's Tire & Auto.
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post #26 of 33 (permalink) Old 05-19-2008, 12:28 AM
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Thanks, maybe ill change them out tomorrow, now that gas is over 4$ per gallon.
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post #27 of 33 (permalink) Old 01-25-2010, 03:07 PM
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Quote:
Originally Posted by Trunk Monkey View Post
Removing the air silencer will:
  • Increase your mileage
  • Increase your horsepower
  • Dramatically improve your 0-60 and 1/4 mile times
  • Increase your top end by at least 100 MPH
  • Improve handling
  • Increase airflow and give you that amazing exhaust sound you've always wanted
  • Make you more appealing to the opposite sex
  • Increase the size of your manhood
  • Cause you to win the lottery
  • Cause world peace
  • Save the whales
  • Reverse global warming
  • Free Tibet
...ok aside from the obvious how much of that is actually true?

Rest In Peace Mom.
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post #28 of 33 (permalink) Old 01-25-2010, 05:34 PM
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Originally Posted by GRNDPNDR View Post
...ok aside from the obvious how much of that is actually true?
None. Leave the air intake alone until you decide to really work on the engine to be a race horse.

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post #29 of 33 (permalink) Old 01-25-2010, 05:56 PM
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None. Leave the air intake alone until you decide to really work on the engine to be a race horse.
I knew I was sticking my foot in my mouth with that one.......I'm going to go do what your avatar is doing now ....

Rest In Peace Mom.
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post #30 of 33 (permalink) Old 01-25-2010, 06:56 PM
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Originally Posted by GRNDPNDR View Post
I'm going to go do what your avatar is doing now ....
LOL!

Hey, I asked the same question about my Mark VII on another site and got the same response. I am glad I asked because now I know that to waist the money on the intake really is a waist of money. Unless you are doing the heads, exhaust and intake, don't bother, you gain nothing more than a shinny metal tube in an otherwise regular engine.

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