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Old 04-09-2005, 02:01 AM   #1
leoflc
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Default how's the fuel efficiency w/ Cobb AP?

Hi, I have a 05 wrx, purely stock right now.
And I was just wondering how's the fuel effciency if I put on Cobb's ap?
Right now I'm getting about 280/tank.

If I get an AP, could I stay the same or even improve fuel efficiency while getting more power?

Thanks a lot!
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Old 04-09-2005, 02:05 AM   #2
darksands
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Both improve as well as not... It all depends on how you drive man. I think someone said that if you want to save gas, shift at 16-25-45-60. AP has an economy map if you want to use that but... just let of on the gas a bit. I get about 280-300 and I have the AP as well. I also have the ST.
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Old 04-09-2005, 03:59 AM   #3
Drews_WRX
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i've averaged 22-24mpg for as long as I can remember. Mostly all highway 75+mph and a few (5-15) WOT runs here and there. A normal number is 300 miles, then the low fuel light comes on. Best tank I had w/stage 1 was 26mpg.
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Old 04-09-2005, 08:56 AM   #4
jimmyd
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Quote:
Originally Posted by leoflc
Right now I'm getting about 280/tank.
Well your mileage can vary a bit depending on driving style, fuel quality, climate and mods to you car. For comparisons sake, I was getting ~230 miles per tank (by per tank I mean between 14-14.5 gallons at fill-up) with an Uppipe & Downpipe (both catless), and stock ECU. Now with the Access Port (Iím running Stage 2-93oct map) Iím getting ~260 miles per tank.
Hope this helps.
JimmyD
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Old 04-09-2005, 03:02 PM   #5
br0kyn
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Before AP, 22-23 mpg, 300-310 before the light came on.

After AP, 21-24 mpg, 280-320 before the light came on.

Lower numbers come from me accelerating a bit more aggressively almost off every stop light. It's too much fun. I use to shift at ~2200rpms before the AP every single time... now I surpass it almost every start from a dead stop. I'd go to about 3 or 4k instead in first gear. My cruising speeds having changed much, I just hover around speed limit.
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Old 04-09-2005, 09:02 PM   #6
leoflc
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Thanks guys!

But "in theory", how would the ap change the fuel efficiency? (stage 1 map; let's assumed that the driving style is the same before and after the ap)

And does anyone know how "economy" would the economy map can get?

Thanks again!
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Old 04-09-2005, 10:33 PM   #7
redeemedsoul
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dam .. i get like 190-210 miles on a full tank of gas.. =\ maybe i should baby my car more lol ..
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Old 04-10-2005, 06:29 PM   #8
GameOver
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ive gotten 28.5 MPG ....... from san jose, ca to los angeles, ca
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Old 04-10-2005, 07:14 PM   #9
Paulie V
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Well, I do know that a buddy of mine with Stage 2 on his '04 WRX has seen 30 MPG on a long highway cruise. I just went to stage 1 93 octane, and am on my first full tank with the AP so I'll let you know the results, but I can tell you that it does take a lot less throttle to get the same acceleration (more torque throughout the rev range), so I could see how things improve unless you're constantly getting on it.
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Old 04-10-2005, 10:19 PM   #10
Blu_Scobbie
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I have had my AP stage 1 for a month now and average the same as I did before 280-300 per tank. That's shifting at about 3000 normally with spirited driving everyday after work trying to get home at a decent time in Las Vegas traffic
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Old 04-10-2005, 11:24 PM   #11
brentlz
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Shifting at 3000 RPM?!? Heck, I regularly downshift to keep it above 3500 RPM...I don't even bother with 5th unless above 65MPH. Have run AP Stage 1 since it came out and haven't noticed a drop in milage (other than the 1st tank after flashing). Averaged 23.3 MPG over 35K total miles. Best of 31.9 MPG (Kingman to Palmdale) & worse of 17.3 (breaking in the AP).

Brent.
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Old 04-11-2005, 01:22 PM   #12
UK_SUB
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I just did a 270 mile run and returned 25.6. Driving fairly carefully in a stock except for a TurboXS turbo back wagon. In normal day to day driving I return about 22 - 23 depending on how much fun I'm having (300 - 310 before the red light)............
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Old 04-11-2005, 02:25 PM   #13
subieworx
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I am running stage 2 AP on my 04 wrx and get about 18-19mpg (250/tank). Ever since the new maps (v1.21 1.22) came out my gas mileage has gone to ****. I used to get about 300-310 before those maps.
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Old 04-11-2005, 03:21 PM   #14
MDRex
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I'll say that I can get the same mileage if I wanted too, but I certainly don't. I drive the car much harder because it's that much more fun with stage 2, so now I'm getting about 21 mpg. But it's worth it and I don't commute with the WRX anymore, that's what the Neon is for.
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Old 04-27-2005, 10:32 PM   #15
leoflc
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just wondering anyone has some different numbers?
Thanks a lot.
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Old 04-27-2005, 11:50 PM   #16
wrxdrvr
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Before AP I got about 300 to 310 miles when gas light came on. Now if I drive on econo map I get about 330 to 340 miles when gas light comes on. Driving on stage 1 93 oct map I get about the same as before AP but much more fun.
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Old 04-28-2005, 01:32 AM   #17
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I'm using Stg1 Californian map... Theoretically according to Cobb, Californian maps will run richer fuel...but I see negligible to none difference in gas consumption. As most people well said, the major factor determining the mileage is your driving style.
I have a boost gauge, so I can monitor the gauge and try to keep it at negative boost (vaccum) or minimal boost (barely above zero). Avoid all unnecessary passing-overs, unnecessary acceleration, unnecessary throttle taping, etc... Keep your car run smooth if gas price is an issue for you.
I have once driving my car long enough after the low-on-gas LED turned on, in heavy jammed traffic going uphill too. Finally got to a gas station, knowing that I have barely 1 gallon gas remaining in tank, but I have driven 375 miles off the used fuel. (and it is a 4eat WRX!)
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Old 04-28-2005, 08:03 AM   #18
subieworx
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Just measured mine again today and I am getting just barely over 19 mpg. Mixed city/highway.
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Old 04-28-2005, 09:35 AM   #19
pezman04wrx
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I used to range about 19-20 mpg ... Pretty much all back roads, minimal highway/city ... Running Stage 2 I'm seeing 22-23mpg normally ... Highway only, I've done 400 miles on a tank in both Stock and Stage 2 set-ups, no real difference I've noticed in mpg's ... Though there should be, likely just me being on the gas a bit more on the long trips ... The only downside to Stage 2 (if I can call it a downside ) would be that I'm rarely off the throttle, and the mpg's don't like it at all ... My record is a tank in less then 200 miles ...
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Old 04-28-2005, 12:00 PM   #20
2fst4u2c
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I have an 2002. Have had the Ap on now for 30 days. . .just went to Tenn. from Pa 28.4 MPG. (This included a few 100 + MPH runs)
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Old 04-28-2005, 12:53 PM   #21
03WREX
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I admit I have a lead foot so I know that my mileage isn't the best but I'm willing to pay a little more at the pump to make my commute a little more fun. I average about 240miles per fill up, which is usually right before the gas light turns on... so a full tank will probably net me 280ish. Not great but like I said, I have a lead foot. This is on Cobb stg2 by the way.

I plan on going to stage 2.5 soon. I wonder how gas consumption will be then.
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Old 04-28-2005, 02:02 PM   #22
subieworx
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I think the changes for the 04/05's will hurt the fuel econ more than that of the 02/03's.
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Old 04-28-2005, 02:06 PM   #23
mistaare
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if driving with a light foot or highway, i get better gas mileage. about 300-320 tank.
usually i between 280-300 tank.


before AP i was lucky to get 300/tank. been stg 2 almost 3000 miles.
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Old 04-28-2005, 06:11 PM   #24
leoflc
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nice, so I guess I'll go far a Cobb AP after they have solved stalling problem for 04/05
Thanks a lot!
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Old 04-28-2005, 07:18 PM   #25
ptaaty
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stage 2 gets better milage that stock for me. Even driven harder it gets a little better milage

sweet sweet stage 2.
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