anyone elses gas mileage go down after installing off road pipe

abouttobeglue

Founding Member

Nov 25, 2001

529

1

18

birmingham al

Jun 20, 2005

#1

• Jun 20, 2005

• #1

my gas mileage has gone down about 2-3mpg since i put on my prochamber, i dont have mils yet and the cel is on, anyone else have this problem

 

K

Kilgore Trout

Fried or Broiled ?

10 Year Member

Mar 30, 2005

4,749

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134

Jun 20, 2005

#2

• Jun 20, 2005

• #2

gas mileage? wat dat?

 

9646gt

Member

Apr 7, 2005

595

3

18

Holloman AFB,NM

Jun 20, 2005

#3

• Jun 20, 2005

• #3

those rear o2 sensors dont affect the AF ratio at all..only monitor emmissions so that is most likely not the problem..maybe a leak could contribute to it..mine already had an o/r midpipe so I cant help much..maybe you are gassing it more to hear the sound? hehe jk

 

I

iStang

New Member

Apr 10, 2004

55

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0

Jun 20, 2005

#4

• Jun 20, 2005

• #4

less low end torque, so you are gassing more? Just and idea

 

lgndracer

New Member

Feb 21, 2004

393

0

0

Sumner, WA

Jun 20, 2005

#5

• Jun 20, 2005

• #5

Kilgore Trout said:

gas mileage? wat dat?

Click to expand...

My thoughts exactly!

You want to know about gas milage, my daily driver is a V10 gas Excursion. With the current gas prices I'm payin' about $105 to fill it up!

Not really sure what the Mustang gets, I've never calculated it. But I would guess about 16?

 

T

TMaC

New Member

Jan 12, 2002

31

0

0

Jun 20, 2005

#6

• Jun 20, 2005

• #6

I lost about the same when I put an O/R pipe on my 5.0 a few years ago.

 

Superhereaux

chicks make me feel inadequate

Founding Member

Jul 30, 2002

538

3

59

South Texas

Jun 20, 2005

#7

• Jun 20, 2005

• #7

mine stayed the same after i installed my prochamber, around 19




went down the first couple of weeks i had it on though

 

Seraphitia102

will post boobie pics for a supercharger

Oct 11, 2004

737

1

16

California

Jun 20, 2005

#8

• Jun 20, 2005

• #8

i get 15-16mpg with the stock exhaust

 

M

Mychael101

New Member

May 30, 2005

4

0

0

Dallas TX

Jun 20, 2005

#9

• Jun 20, 2005

• #9

Man I just filled up today and average 25mpg. Gotta get my car tuned soon now that I hvae my LT's in! Good thing is that my mileage hasn't changed a bit.

 

I

iStang

New Member

Apr 10, 2004

55

0

0

Jun 20, 2005

#10

• Jun 20, 2005

• #10

Mychael101 said:

Man I just filled up today and average 25mpg. Gotta get my car tuned soon now that I hvae my LT's in! Good thing is that my mileage hasn't changed a bit.

Click to expand...

lol something is wrong with your car, take it to the shop lol


Igndracer: What's the #39 in your sig. Do you have an anniversary model?

 

Skidzz

Tinkerbell

Apr 11, 2005

328

1

19

Salt Lake City, UT

Jun 20, 2005

#11

• Jun 20, 2005

• #11

9646gt said:

those rear o2 sensors dont affect the AF ratio at all..only monitor emmissions so that is most likely not the problem..maybe a leak could contribute to it..mine already had an o/r midpipe so I cant help much..maybe you are gassing it more to hear the sound? hehe jk

Click to expand...

I'm not so sure about that. When my check engine light was coming on because of my EGR valve, i got worse mileage when the light was on, about 235 mile per tank. But the light would go on and off all the time. When it was off i got about 265 miles per tank. Now that i cleaned the egr out and the light is off for good i get about 280 mph. Then again, the egr has to do with a/f i believe, so that could be the reason. Im just thinking maybe the extra airflow is causing his ecu to add fuel to the mixture. I mean im not trying to argue, im not an expert, just askin.....

 

COramprat

...I can take it. I think.

20+ Year Stangneter

Mar 2, 2003

8,474

1,463

223

Sea of Tranquility

Jun 20, 2005

#12

• Jun 20, 2005

• #12

Try reseting the computer (disconnect the battery for 30 minutes) to see if it helps. Nearly every computer or electrical related problem I've had staightens out with a computer reset.

 

mity2

I like Pro3 and all I got was this crappy CT.

Jul 24, 2003

2,872

3

48

StateCollege PA

Jun 20, 2005

#13

• Jun 20, 2005

• #13

i never thoguth about gas milege, but i think mine is tad bit lower since i got o/r mid pipe

 

Pughman

Member

Dec 25, 2004

295

2

18

in a galaxy far far away"MISSOURI"

Jun 20, 2005

#14

• Jun 20, 2005

• #14

i get 23 ?

 

lgndracer

New Member

Feb 21, 2004

393

0

0

Sumner, WA

Jun 20, 2005

#15

• Jun 20, 2005

• #15

iStang said:

Igndracer: What's the #39 in your sig. Do you have an anniversary model?

Click to expand...

All Saleens are numbered. Mine is number 39 in 2003.

 

Stang|ess

seeking cyber partner(s)

Oct 18, 2003

941

0

37

Hawaii

Jun 20, 2005

#16

• Jun 20, 2005

• #16

Seraphitia102 said:

i get 15-16mpg with the stock exhaust

Click to expand...

Damn you must go WOT at every stoplight.

I get about 22-23ish.

 

Orions98GT

New Member

Nov 20, 2004

234

0

0

Overland Park, KS

Jun 21, 2005

#17

• Jun 21, 2005

• #17

I average 22.5 all the time.

 

HoustonGT

Gilded Gelding

Apr 6, 2003

1,418

0

0

Houston

Jun 21, 2005

#18

• Jun 21, 2005

• #18

Prolly went down cuz now you subconciously give it more gas just to hear the new exhaust sound

 

mity2

I like Pro3 and all I got was this crappy CT.

Jul 24, 2003

2,872

3

48

StateCollege PA

Jun 21, 2005

#19

• Jun 21, 2005

• #19

damn you guys got good milege. I think i get about 20mpg avg...

 

U

UhadMEatGT

New Member

Apr 2, 2005

117

0

0

Jun 21, 2005

#20

• Jun 21, 2005

• #20

Anything that deals with your emissions can cause your mileage to go down.