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Old 09-09-2013, 12:01 AM   #36
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I agree! I turn off overdrive on my auto, definitely helps
Wouldn't that decrease your gas mileage? I thought turning off overdrive gives you 1 less gear making your revs higher? I could be wrong tho
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Old 09-09-2013, 12:07 AM   #37
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Wouldn't that decrease your gas mileage? I thought turning off overdrive gives you 1 less gear making your revs higher? I could be wrong tho
OD is used for highway, if you are driving all city miles and it goes into your OD it can actually big the engine down making it work harder. That will decrease mpg.
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Old 09-09-2013, 12:07 AM   #38
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Wouldn't that decrease your gas mileage? I thought turning off overdrive gives you 1 less gear making your revs higher? I could be wrong tho
Pretty sure every time I've done it, it shifts at around 3k rpms. Either way I don't drive it maniacally cuz it shifts at lower rpms. But who knows.. Anyone wanna add some insight? Lol
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Old 09-09-2013, 12:16 AM   #39
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Pretty sure every time I've done it, it shifts at around 3k rpms. Either way I don't drive it maniacally cuz it shifts at lower rpms. But who knows.. Anyone wanna add some insight? Lol
Hopefully someone else can chime in I drive 90% of the time in the city and I always have od on because that's what the car goes to when I start it but if its better to turn it off every time I get in the car I definitely will!
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Old 09-09-2013, 12:17 AM   #40
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Hopefully someone else can chime in I drive 90% of the time in the city and I always have od on because that's what the car goes to when I start it but if its better to turn it off every time I get in the car I definitely will!
Most cars are smart enough not to go into OD when it's not needed so its fine to leave it on.
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Old 09-09-2013, 03:14 AM   #41
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I think i'll try the OD off thing. even though i think that if you don't have a trailer in the back it's more efficient with the OD on
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Old 09-09-2013, 09:55 AM   #42
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I guess OD is on auto lol
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Old 09-09-2013, 10:01 AM   #43
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I guess OD is on auto lol
yup, it's overdrive and it gets into a higher gear to improve mpg and reduce engine temp. but you need to turn it off when you have a trailer or go up a hill. with OD it shifts at around 1500-1700 rpm and without at 2500-3000
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Old 09-09-2013, 10:09 AM   #44
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yup, it's overdrive and it gets into a higher gear to improve mpg and reduce engine temp. but you need to turn it off when you have a trailer or go up a hill. with OD it shifts at around 1500-1700 rpm and without at 2500-3000
So it's best to just leave it on?
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Old 09-09-2013, 10:15 AM   #45
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Would it make sense to turn OD off if you're driving spirited ??
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Old 09-09-2013, 10:23 AM   #46
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Would it make sense to turn OD off if you're driving spirited ??
well... if you turn it off, then you have higher rpm so more hp which if you keep stopping and going could help by not running rich, i think. but from a certain speed higher, definitely hurts the mpg
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Old 09-09-2013, 10:28 AM   #47
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well... if you turn it off, then you have higher rpm so more hp which if you keep stopping and going could help by not running rich, i think. but from a certain speed higher, definitely hurts the mpg
Maybe only during take offs?
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Old 09-09-2013, 10:31 AM   #48
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Maybe only during take offs?
yeah, that's what i think. i'm going to test it. also, i've heard that the fuel filter goes a long way mpg wise and i don't think someone ever changed it on mine)
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Old 09-09-2013, 10:32 AM   #49
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yeah, that's what i think. i'm going to test it. also, i've heard that the fuel filter goes a long way mpg wise and i don't think someone ever changed it on mine)
I've changed mine twice since I got it(last weekend actually). I've only got 78k miles.
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Old 09-26-2013, 02:16 AM   #50
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You guys are so lucky. All of you. Lol. I get 9 mpg no matter what I do. City. Highway I get 32! But 99% of the time I drive in traffic so horrible mileage. Tried everything n given up already. Bone stock auto, 39000+ miles on the clock.
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Old 09-26-2013, 07:51 AM   #51
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You guys are so lucky. All of you. Lol. I get 9 mpg no matter what I do. City. Highway I get 32! But 99% of the time I drive in traffic so horrible mileage. Tried everything n given up already. Bone stock auto, 39000+ miles on the clock.
wow, that's a lot. do you have the 4.0 v6?
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Old 09-26-2013, 08:09 AM   #52
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wow, that's a lot. do you have the 4.0 v6?
if his profiles correct yes! lol that's terrible
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Old 09-26-2013, 01:18 PM   #53
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Yup. 4.0
Getting tired of the crappy mileage. Thinking of getting a blower. Considering how bad mileage is anyway, can't get any worse. Putting on dual exhausts with an H pipe tomorrow.
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Old 09-26-2013, 01:27 PM   #54
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Yup. 4.0
Getting tired of the crappy mileage. Thinking of getting a blower. Considering how bad mileage is anyway, can't get any worse. Putting on dual exhausts with an H pipe tomorrow.
oughta be sweet, I went from a X to H with GT mufflers and I liked the X pipe better myself. what mufflers you going with?
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Old 09-26-2013, 01:51 PM   #55
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Got the exhausts off a 2013 gt for free from a buddy of mine. I know it ain't custom exhausts but got to be better than the stock v6 exhaust(which has holes drilled in it) lol. Loud as hell!
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Old 09-26-2013, 01:51 PM   #56
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custom drilled holes? interesting haha
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Old 10-08-2013, 08:52 PM   #57
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your o2 sensors have got to be burn to hell. if youre getting 9 then its got to be either fuel filter, o2 sensors, never changed spark plugs or wires and a bogged up air filter. actually maybe a combination of all lol. i would get back uo under the exhaust and check the two o2 sensors on the left side next to the headers above the cats.
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Old 10-12-2013, 06:22 AM   #58
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We'll I've changed the plugs, air filter, fuel filter, engine oil and cleaned the mag sensor. Only thing I haven't done is check the o2 sensors. Which side is bank 1 n which is bank 2?
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Old 10-12-2013, 06:27 AM   #59
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We'll I've changed the plugs, air filter, fuel filter, engine oil and cleaned the mag sensor. Only thing I haven't done is check the o2 sensors. Which side is bank 1 n which is bank 2?
did you mean maf sensor? also, do you have an automatic? because you might need to change the transmission fluid too. there must be something creating a drag there.
also, check for errors and see if the EGR valve is in ok condition
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Old 10-12-2013, 08:51 AM   #60
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His maf sensor might be dirty but there's no reason it would cause that bad of a mileage drop. How many miles are on the car ?? Also the tranny fluid is a good idea for maintenance but that would be one hell of a drag and he would be redlining every time he accerated if his engine had to work that hard
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Old 10-12-2013, 09:07 AM   #61
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His maf sensor might be dirty but there's no reason it would cause that bad of a mileage drop. How many miles are on the car ?? Also the tranny fluid is a good idea for maintenance but that would be one hell of a drag and he would be redlining every time he accerated if his engine had to work that hard
you're right but it might just be old and too thin or with dirt/particles, but level-wise you are right
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Old 10-12-2013, 10:59 AM   #62
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I hope I didn't miss it but...
One thing not yet mentioned here is wheel/tire combination. What size wheels and tires are you running? What tire pressure are you maintaining? Those nice big 18x10 wheels are nice looking but the suck gas. Huge disk brake kits behind those wheels look great too, but suck even MORE gas.

Still, your mileage should be better.

I still have the stock 16" with 225/60r16 all around.
I get about 22.2 mpg consistently. My mods are:
C & L CAI
Dual exhaust (GT take-offs)
Ford Racing 3.73
SCT tuner (incase it matters, not Bama.)
And a few very minor cosmetic mods.

Before the 3.73, my 3.32 was giving me 23.2 to 23.8. Dang! Ha ha. However, I'll keep the 3.73 and one less mpg. It seems like I should be getting better mileage but I suppose I'm average.
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Old 10-12-2013, 02:27 PM   #63
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Before the 3.73, my 3.32 was giving me 23.2 to 23.8. Dang! Ha ha. However, I'll keep the 3.73 and one less mpg. It seems like I should be getting better mileage but I suppose I'm average.
Knooper I thought 3.73 were stock??

---------- Post added at 03:27 PM ---------- Previous post was at 03:23 PM ----------

And as mentioned before, if it's an auto, you gotta learn how to not drive like you're at the strip every time you take off lol. When I first got mine I had hella fun with it and got about 12 mpg. With a tune, new plugs, new fuel filter and driving like a regular human being i get about 20 in city and 23 on hwy. but it's low on highway cause I'm usually at 85-90. Bring it to about 75 consistently and I get around 26
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Old 10-12-2013, 06:40 PM   #64
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Knooper I thought 3.73 were stock??

---------- Post added at 03:27 PM ---------- Previous post was at 03:23 PM ----------

And as mentioned before, if it's an auto, you gotta learn how to not drive like you're at the strip every time you take off lol. When I first got mine I had hella fun with it and got about 12 mpg. With a tune, new plugs, new fuel filter and driving like a regular human being i get about 20 in city and 23 on hwy. but it's low on highway cause I'm usually at 85-90. Bring it to about 75 consistently and I get around 26
Before the Ford Racing 3.73 I had the standard 7.5" 3.31. (Damn, I keep saying 3.32)
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Old 10-12-2013, 06:49 PM   #65
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Knooper I thought 3.73 were stock?? ---------- Post added at 03:27 PM ---------- Previous post was at 03:23 PM ---------- And as mentioned before, if it's an auto, you gotta learn how to not drive like you're at the strip every time you take off lol. When I first got mine I had hella fun with it and got about 12 mpg. With a tune, new plugs, new fuel filter and driving like a regular human being i get about 20 in city and 23 on hwy. but it's low on highway cause I'm usually at 85-90. Bring it to about 75 consistently and I get around 26
Around 3.31 is stock, 3.73 is recommended for automatic and 4.10 for manual and the higher the ratio the lower the mpg but higher performance you can find some 3.10 but only for gt's because they have higher torque. Mpg-wise, stock is optimum. Still, i get way worse than normal mpg
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Old 10-12-2013, 07:33 PM   #66
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Around 3.31 is stock, 3.73 is recommended for automatic and 4.10 for manual and the higher the ratio the lower the mpg but higher performance you can find some 3.10 but only for gt's because they have higher torque. Mpg-wise, stock is optimum. Still, i get way worse than normal mpg
Aren't 4.10s recommended for autos and 3.73 for manuals? And why have high mpg when you can have more performance lol
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Old 10-12-2013, 08:08 PM   #67
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Mine are 3.73 they are stock. Around 3.31? What does around 3.31 mean?
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Old 10-12-2013, 11:55 PM   #68
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Mine are 3.73 they are stock. Around 3.31? What does around 3.31 mean?
The higher the number the faster the acceleration.
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Old 10-13-2013, 12:03 AM   #69
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I meant maf sensor yes. Sorry. 18 inch rims n tires. Always filled to 36 psi. Don't think I have much drag coz I can cruise pretty well In neutral. Yes it's an auto. Sorry to sound like a noob, but I am to stangs n muscle cars in general. What's am EGR valve? Gonna ask uncle google now...haven't changed tranny fluid since I got it. Car has about 36k miles on it.
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Old 10-13-2013, 12:09 AM   #70
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The higher the number the faster the acceleration.
Yeah I know I just haven't heard of 3.31
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