rexster Posted March 23, 2009 Share Posted March 23, 2009 ~300 hp ~75 mph on highway passing often open throttle out of every turn on back roads ------------------------------------------- ~ 21 mpg average + Link to comment Share on other sites More sharing options...
massdrewski Posted March 24, 2009 Share Posted March 24, 2009 Hey! My buddy (class a driver for 4 years) was driving. He got within 5 feet of a truck for about 10 miles. scary as heck heading to the RI boarder. We fueled up and the average was about 43mpg.....do not under estimate the power of a truck. half the time he didn't even use the gas or cruise. pretty scary and we are lucky there were no bears on the road. Link to comment Share on other sites More sharing options...
massdrewski Posted March 24, 2009 Share Posted March 24, 2009 give it a try though. Drive behind a truck. 10-15 feet is OK and clear your computer. It will shoot up. When we pulled on her said "wanna see something funny?" He got right up on his ass. He told me that he did that in AZ to CA and was getting about 16mpg on his rig (avg, 10mpg). One thing I could feel was the vibration...big time. the winds in the back are a bit nerve ending. but he is a "professional driver" so.... But he drives a Camry. Link to comment Share on other sites More sharing options...
caschmidt Posted March 24, 2009 Share Posted March 24, 2009 If youve got the auto and have extreme skill, you can keep the torque converter locked and save massive amounts of fuel. Its hard to explain, but you can feel it lock, and it normally stays locked if u dont push on the gas too hard. I can keep mine locked even when going up slow hills and whatnot, it takes some getting used to. When its unlocked, it wasted so much energy. and yes, I am way too in-tune with my auto trans =P Link to comment Share on other sites More sharing options...
Merc6 Posted March 24, 2009 Share Posted March 24, 2009 update for me: 2005 2.5i pzero emissions engine @ 69k miles(a lot more restrictive than the regular 2.5i engine): - perrin panel filter - intake silencer removed - resonator removed - custom made exhaust 100% city driving @ 27.1 mpg @ avg 40-50mph. stayed at 2000-2600 rpm at all times. damn that was hard. but w/o the resonator the exhaust gets too loud past 3000 rpm.... so i gotta keep the revs low. sucks for speed and sound.. but great for mpg!Yep even with stock cans the turbo howl is also still there at idle. 2005 Satin White Pearl Subaru Legacy 2.5 GT Unlimited 5EAT (Project Car) 2019 Agate Black Ford Explorer XLT 4WD (DD) Link to comment Share on other sites More sharing options...
Merc6 Posted March 24, 2009 Share Posted March 24, 2009 If youve got the auto and have extreme skill, you can keep the torque converter locked and save massive amounts of fuel. Its hard to explain, but you can feel it lock, and it normally stays locked if u dont push on the gas too hard. I can keep mine locked even when going up slow hills and whatnot, it takes some getting used to. When its unlocked, it wasted so much energy. and yes, I am way too in-tune with my auto trans =P I suck at multiquote so I don't... If i had a dream about touching the gas it unlocks. There was no gentle tap or minute movement that would prevent it. I assume it could be a tune but never heard a subaru community that had tranny tunes like the ford auto crowd had. Our tuners let us bump lock up speeds, shift times and firmness. 2005 Satin White Pearl Subaru Legacy 2.5 GT Unlimited 5EAT (Project Car) 2019 Agate Black Ford Explorer XLT 4WD (DD) Link to comment Share on other sites More sharing options...
NORULZleggy Posted March 24, 2009 Share Posted March 24, 2009 I am getting 25.6 on a 2.5i (08) on the highway doing 78 on a 440 mile trip. Link to comment Share on other sites More sharing options...
Max713 Posted March 24, 2009 Share Posted March 24, 2009 The mpg display is not accurate. Another member posted a chart showing actual compared to display and the results were erradic. Ive checked the mpg display on my LGT twice and both times its been exactly what I calculated with the miles divided by gallons method. 21.3, then 21.7 (probably 60/40 city/highway) Link to comment Share on other sites More sharing options...
AWDxBOOST Posted March 24, 2009 Share Posted March 24, 2009 the best ive averaged is about 29.4 mpg driving like a grandma, mostly highway at 65mph usually im around 22-23 Link to comment Share on other sites More sharing options...
blackfang Posted March 24, 2009 Share Posted March 24, 2009 I have a 2.5i and average mid 24-26 around town, but have gotten as high as 31 mpg highway and I am stock with just an SPT catback. [SIZE=1][URL="http://public.fotki.com/blackfang/"]Pics[/URL] [B]08 KawasakiZZR 600- exhaust and other mods 98 Camaro Z/28 HT- some mods......street/strip car 07 Legacy 2.5i- SPT exhaust...daily driver[/B][/SIZE] Link to comment Share on other sites More sharing options...
Ryouske Posted March 24, 2009 Share Posted March 24, 2009 30.8 on an all highway trip. Link to comment Share on other sites More sharing options...
987687 Posted March 24, 2009 Share Posted March 24, 2009 ∞ when going down hill with the engine off... Link to comment Share on other sites More sharing options...
caschmidt Posted March 25, 2009 Share Posted March 25, 2009 lol ∞ with the engine off.. I normally get 24 around town, and 28ish on the highway. The best Ive ever gotten is 31.5. I dont have one of those fancy trip computers tho =P I do it the old fashion way Link to comment Share on other sites More sharing options...
Merc6 Posted March 25, 2009 Share Posted March 25, 2009 lol ∞ with the engine off.. I normally get 24 around town, and 28ish on the highway. The best Ive ever gotten is 31.5. I dont have one of those fancy trip computers tho =P I do it the old fashion way Since I got it I became more mpg anal now. I try to stay away from instant & current mpg and x miles to empty if I can. 2005 Satin White Pearl Subaru Legacy 2.5 GT Unlimited 5EAT (Project Car) 2019 Agate Black Ford Explorer XLT 4WD (DD) Link to comment Share on other sites More sharing options...
Lagbot Posted March 29, 2009 Share Posted March 29, 2009 I have a 2.5i and average mid 24-26 around town, but have gotten as high as 31 mpg highway and I am stock with just an SPT catback. I want to get a catback for my car i have a 08 2.5i pzev....so they make one for my car Link to comment Share on other sites More sharing options...
blackfang Posted March 31, 2009 Share Posted March 31, 2009 I don't know. Supposedly the SPT is for just the LGT, but it fit on mine. [SIZE=1][URL="http://public.fotki.com/blackfang/"]Pics[/URL] [B]08 KawasakiZZR 600- exhaust and other mods 98 Camaro Z/28 HT- some mods......street/strip car 07 Legacy 2.5i- SPT exhaust...daily driver[/B][/SIZE] Link to comment Share on other sites More sharing options...
987687 Posted March 31, 2009 Share Posted March 31, 2009 Now that it is warm again I'm getting 31 average in the rural middle of nowhere in which I live. I have a scangauge2 now, so I can adjust my driving better Link to comment Share on other sites More sharing options...
Redkillr Posted April 1, 2009 Share Posted April 1, 2009 mine got 33.1mpg on a 4hour highway trip. Link to comment Share on other sites More sharing options...
BAC5.2 Posted April 1, 2009 Share Posted April 1, 2009 On the 60 mile drive home from the dealership, I averaged 31mpg. [URL="http://legacygt.com/forums/showthread.php/proper-flip-key-interesti-159894.html"]Flip Key Development Thread[/URL] "Genius may have its limitations, but stupidity is not thus handicapped." - E. Hubbard Link to comment Share on other sites More sharing options...
Vetterin Posted April 3, 2009 Share Posted April 3, 2009 I average about 26.9, and at my best I was at 28. Thats mostly highway at 65-70mph. That's just about where I'm at although I have managed just over 29 a few times. I too drive about 85% hwy. Link to comment Share on other sites More sharing options...
lousypirate Posted April 20, 2009 Share Posted April 20, 2009 For the Record: Before my O2 Sensor went out, i was averaging 30-35 (don't really remember because i haven't fixed the o2 sensor... waiting to do exhaust) on the highway when i used the cruise control at the legal speed or 5 mph over. Iridium Spark Plugs, CAI, Lightweight Crank Pulley. Link to comment Share on other sites More sharing options...
pre-dent Posted April 20, 2009 Share Posted April 20, 2009 Just wanted to mention something for those getting low gas mileage. It could just be due to the high mileage on my legacy (86,XXX), but I used a bottle of STP complete fuel system cleaner (silver bottle) a couple tanks ago and am now averaging about 3 miles more per gallon. I used to get around 21.5-22 mpg for what I would consider approx 60%/40% (city/highway) driving. Haven't taken a long road trip since, but the highest avg I've ever seen was on a 4hr drive at 29mpg. I'd imagine it'd be up in the low 30's now. Fuel system must have been pretty dirty/clogged. Link to comment Share on other sites More sharing options...
WhatV8 Posted April 20, 2009 Share Posted April 20, 2009 ^^^ Depending on how dirty your system is (injectors, valves, chambers) you can knock a few MPG off your average. A former 4-cyl vehicle I owned had leaking valve stem seals that allowed oil to coke up on the valves and restrict air flow. I tried several fuel additives w/o any real success. On a particular long road trip (~750 miles) I ran through a couple of bottles of Chevron Intake Valve Cleaner. My MPG went from 23 to 29 by the end of the second treated tank. Since then I swear by the Techron products. I still run a bottle through each one of my vehicles at every oil change to keep them clean and running smooth. My wife's 02 Forester with 96K on the clock still pulls down a consistent 22 mpg just like when it was new. Link to comment Share on other sites More sharing options...
blackfang Posted April 20, 2009 Share Posted April 20, 2009 This past weekend I got 31.5 MPG on our trip to MD/NJ [SIZE=1][URL="http://public.fotki.com/blackfang/"]Pics[/URL] [B]08 KawasakiZZR 600- exhaust and other mods 98 Camaro Z/28 HT- some mods......street/strip car 07 Legacy 2.5i- SPT exhaust...daily driver[/B][/SIZE] Link to comment Share on other sites More sharing options...
Pawlwawl06 Posted April 20, 2009 Share Posted April 20, 2009 Im averaging 30.3 over 1200k miles according to my on-board mpg gauge, much better now that it is warmer. Also dumped a bottle of SeaFoam in the fuel tank and some in with the engine oil. Link to comment Share on other sites More sharing options...
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