Who has the worst gas mileage?
Thread Starter
Supreme Member
iTrader: (1)
Joined: Feb 2000
Posts: 2,361
Likes: 1
From: Savannah, GA
Car: 1997 Jeep Wrangler
Engine: 4.0L
Transmission: 5 speed
Axle/Gears: 8.8 rear, 4.56 gears, 4:1 transfer
Who has the worst gas mileage?
I don't think I do but it's not great either. I am getting 125 miles on this tankfull.
Usually it's around 150-160 miles per tank. I just recently swapped from MAF to MAP too.
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86 Camaro Sport
383 Speed-O-Motive Crate Engine, Raptor 700R4 Tranmission, Trick Flow Twisted Wedge G2's, 58mm Accel TB, 3.73 Auburn Pro, SLP Cold Air Induction and Headers, Dynomax Cat-back, Serpentine Belt Setup, Dual IROC Fans, Jamex springs, 16" IROC Rims, 36mm/24mm Sway Bars, Global West Steering Brace. Hotchkis Rear LCA's,Panhard Bar and SFC's.
My Camaro Project
Usually it's around 150-160 miles per tank. I just recently swapped from MAF to MAP too.------------------
86 Camaro Sport
383 Speed-O-Motive Crate Engine, Raptor 700R4 Tranmission, Trick Flow Twisted Wedge G2's, 58mm Accel TB, 3.73 Auburn Pro, SLP Cold Air Induction and Headers, Dynomax Cat-back, Serpentine Belt Setup, Dual IROC Fans, Jamex springs, 16" IROC Rims, 36mm/24mm Sway Bars, Global West Steering Brace. Hotchkis Rear LCA's,Panhard Bar and SFC's.
My Camaro Project
Lately I have been geting around 150 on a tank. I usually get about 175 but I live less than 2 miles from school and make that short trip 4 times a day so the engine is always cold and never has a chance to warm up. Sucks for gas mileage and wear.
bsa
bsa
Sheesh, I wish my milage was that good. I get around 10 mpg. 
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91 Firebird Formula. Converted to carb. Holley 750. Forged Flat top pistons. 10.5 to 1 compression. ZZ-9 Cam. Sportsman II Heads.
175 shot NOS, 700r4 w/ 3000 rpm converter and 3.73s in the back. Headers w/ full dual exhaust. 27.5 inch McCrearys.

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91 Firebird Formula. Converted to carb. Holley 750. Forged Flat top pistons. 10.5 to 1 compression. ZZ-9 Cam. Sportsman II Heads.
175 shot NOS, 700r4 w/ 3000 rpm converter and 3.73s in the back. Headers w/ full dual exhaust. 27.5 inch McCrearys.
My '76 Toyota p/u; 23 on a 4 banger,
19-21 on the 'Bird, which one gets the 100 miles a day on it?
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<A HREF="http://www.geocities.com/d_madbrewer/moonshiner.html" TARGET=_blank>
Got Home Brew?</A>,....
If you can catch a quick race @ 5am on your way to work,....win or lose, it'll be a GREAT DAY, (better than coffee)
19-21 on the 'Bird, which one gets the 100 miles a day on it?
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<A HREF="http://www.geocities.com/d_madbrewer/moonshiner.html" TARGET=_blank>
Got Home Brew?</A>,....
If you can catch a quick race @ 5am on your way to work,....win or lose, it'll be a GREAT DAY, (better than coffee)
Senior Member

Joined: Nov 2000
Posts: 762
Likes: 2
From: Riverside, CA
Car: 1987 Camaro IROC-Z
Engine: 305TPI
Transmission: 700R4
man, what is wrong with your cars????
i get 300 a tank! geezus, you riding with the pedal to the metal or what??? lol..
avg 22mpg, 24fwy 20city...
damn, you guys must have 4.56s in the back or somethin
305tpi, 700r4, 3.23 G92 rear..
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Webmaster: www.IROC-Z.org
i get 300 a tank! geezus, you riding with the pedal to the metal or what??? lol..
avg 22mpg, 24fwy 20city...
damn, you guys must have 4.56s in the back or somethin

305tpi, 700r4, 3.23 G92 rear..
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Webmaster: www.IROC-Z.org
Supreme Member
iTrader: (33)
Joined: Jul 2000
Posts: 5,945
Likes: 1
From: Boosted Land
Car: 92 Z28
Engine: Boosted LSX
150- 177 to a tank.
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Chris
1992 25th Anniv Z28 W/383 Stroker
536 RWHP 569 FT LBS
(chassis dynoed at Ramsies Perf.)
Check the rest out here
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Chris
1992 25th Anniv Z28 W/383 Stroker
536 RWHP 569 FT LBS
(chassis dynoed at Ramsies Perf.)
Check the rest out here
<font face="Verdana, Arial" size="2">Originally posted by ColinOpseth:
man, what is wrong with your cars????
</font>
man, what is wrong with your cars????
</font>
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<A HREF="http://www.geocities.com/d_madbrewer/moonshiner.html" TARGET=_blank>
Got Home Brew?</A>,....
If you can catch a quick race @ 5am on your way to work,....win or lose, it'll be a GREAT DAY, (better than coffee)
Trending Topics
Senior Member

Joined: Nov 2000
Posts: 762
Likes: 2
From: Riverside, CA
Car: 1987 Camaro IROC-Z
Engine: 305TPI
Transmission: 700R4
sweet Jeez, I drove from just north of Los Angeles to Las Vegas on ONE TANK!! That's almost 350 miles, lol..
either my car gets extremely good gas mileage or there's some tuning up that needs to be done..
I guess TPI really makes the biggest difference when shooting for mpg
either my car gets extremely good gas mileage or there's some tuning up that needs to be done..
I guess TPI really makes the biggest difference when shooting for mpg
avg between 175 and 200 a tank.
12-16 mpg
lead feet dont help
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91 black Z28, 70k mi.,k+ns, chip, flows, gts blackouts, 18" chrome irocs, kybs, eibac prokit springs, global west sfcs, SLP 1 3/4, hotchkis stb
12-16 mpg
lead feet dont help

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91 black Z28, 70k mi.,k+ns, chip, flows, gts blackouts, 18" chrome irocs, kybs, eibac prokit springs, global west sfcs, SLP 1 3/4, hotchkis stb
Supreme Member
Joined: Mar 2000
Posts: 1,777
Likes: 0
From: First one out of liberty city, burn it to the ground
i get 135 miles a tank 
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1989 Firebird
2.8 v6, t5 swapped in
Ram Hi-po clutch, Cold Air, 1.6 rockers,Lakewood LCA's, Lakewood Lift bars, Wonder Bar, 3" y-pipe, Random Tech Cat, 3" I-pipe, Flowmasters, MSd 6a, MSD Coil (Fireball in future) Accel 8.8 wires, MSD Ignition Module, Auto Meter Gauges (Water, Clock (needed one) Fuel Pressure, and 5" monster tach) 4th Gen Seats
--For Sale--
(Who says drumsets are cheap? selling my car to get a new one..) EMAIL ME!
" I'd rather run last in a full out race, than to NOT run at all ".

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1989 Firebird
2.8 v6, t5 swapped in
Ram Hi-po clutch, Cold Air, 1.6 rockers,Lakewood LCA's, Lakewood Lift bars, Wonder Bar, 3" y-pipe, Random Tech Cat, 3" I-pipe, Flowmasters, MSd 6a, MSD Coil (Fireball in future) Accel 8.8 wires, MSD Ignition Module, Auto Meter Gauges (Water, Clock (needed one) Fuel Pressure, and 5" monster tach) 4th Gen Seats
--For Sale--
(Who says drumsets are cheap? selling my car to get a new one..) EMAIL ME!
" I'd rather run last in a full out race, than to NOT run at all ".
Supreme Member
iTrader: (1)
Joined: May 2001
Posts: 1,638
Likes: 0
From: Greenwood, Indiana
Car: 1984 Trans Am
Engine: Vortec 355
Transmission: TH-700R4
Axle/Gears: GM Axles and GM 3.73
i good hour of cruzin around town will hoze a quarter of a tank....lol
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84TA T-tops L-69 305HO TH-700R4 stock 190hp and 240 ft-lbs.
sony xplod cd player,2 12" profile "baja" subs, and a 250 watt MTX amp
$350 for the subs,amp, and box...rattles my car very good!
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84TA T-tops L-69 305HO TH-700R4 stock 190hp and 240 ft-lbs.
sony xplod cd player,2 12" profile "baja" subs, and a 250 watt MTX amp
$350 for the subs,amp, and box...rattles my car very good!
Member
Joined: Jul 1999
Posts: 496
Likes: 0
From: Chicago, IL
Car: 89 IROC-Z
Engine: LB9
Transmission: 700-R4
I've played around with this and mine's ridiculously variable. Like if I do mostly in town driving and/or have a lead foot I get 15-17 mpg, but if I'm on the highway I can get 29 almost 30. Average is about 20-23. It's an 89 tpi 305 auto with 2.73's and 132000 miles! Oh here's a tip - if you have overdrive and a small gear ratio (like me) I've found that the faster you go on the hwy the better the mileage (at least up to 80 or so as far as I've checked - gotta watch those troopers!) so if you're only doing 55-60 on the hwy you'll get around 24-25 mpg but step up to 70-75 and you can get almost 30 that's how mine is.
I get about 25MPG when I am cruising on the highway and not planking on it. But that rarley happens!!! All I know is work is 25mins away and it cost me over $100 a week for gas. I need a ***** for a second car HAHAH. My 1984 2.8 S-10 gets 16MPG. It wouldn't be so bad if it actually could get out of it's own friggin way. What where they thinking putting that motor in a truck HAHAH.
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91 Z28 Camaro
305 TPI
Flowmaster 3" exhaust
700R4 with 2000 Stall and shift kit 3.42 rearend
Autometer shiftlight tach and B&M mega shifter
One sweet sounding system
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91 Z28 Camaro
305 TPI
Flowmaster 3" exhaust
700R4 with 2000 Stall and shift kit 3.42 rearend
Autometer shiftlight tach and B&M mega shifter
One sweet sounding system
Supreme Member
Joined: Jan 2001
Posts: 1,411
Likes: 3
From: Rock Hill, SC
Car: 1999 Pontiac T/A Firehawk
Engine: ***'s Engine
Transmission: T56
God, some of your guys mileage is terrible! Something is definitely not tuned right.
If I can get 19mpg city out of an EQjet, running with an intermittent rich exhaust code, you guys should be able to do better with your fancy fuel injection systems
If I can get 19mpg city out of an EQjet, running with an intermittent rich exhaust code, you guys should be able to do better with your fancy fuel injection systems

Senior Member
Joined: Mar 2000
Posts: 669
Likes: 0
From: Red Bud, Illinois
Car: 1989 IROC-Z
Engine: 383
Transmission: Pro-Built 700R4 2400 ACT Stall
Axle/Gears: 2.77 Borg Warner 9-Bolt
215 on a tank...
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89 IROC-Z 350 TPI
-Flowmaster Catback
-Performance Resource Chip
-700R4 (Rebuilt) Too much done to actually list
-K&N Airfilters
-Ported Plenum
-2.77 Gears (not much to brag about but eh, its there)
-MSD 8.5 mm plug wires
-Gutted cat
-!AIR
-Gutted Air Boxes
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89 IROC-Z 350 TPI
-Flowmaster Catback
-Performance Resource Chip
-700R4 (Rebuilt) Too much done to actually list
-K&N Airfilters
-Ported Plenum
-2.77 Gears (not much to brag about but eh, its there)
-MSD 8.5 mm plug wires
-Gutted cat
-!AIR
-Gutted Air Boxes
Heh, I -think- I get about 215 a tank. I just filled my tank a few days ago and reset the trip odometer, and it's at 98 miles now..and I have used a little over a quarter of the tank. Then again, I haven't been driving as fast as I usually do...
I used to get close to 200 a tank, sometimes over, but now all I can muster is 150 to 170 miles per tank, what's that, like 12.5 MPG I think.
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1987 Chevy Camaro IROC-Z
L98 TPI 350 (5.7L)
TH 700R-4 Transmission
Borg Warner 7.75" 9 Bolt Rear End with 2.77:1 Gears.
Current Mods: LT4 HOT Cam, Comp Cams 1.52:1 Roller Rocker Arms, Edelbrock TES 1 5/8" Headers, Hooker 3" Aerochamber Cat-Back System, Performance Resource Chip, Accel Ignition, K&N Filters, JET TPI Air Foil, All Free Mods, Falken ZIEX Z-Rated Tires.
Best ET (w/o LT4 cam): 14.32 @ 97.7mph
(corrected for elevation)
Soon to Come: 7.625" 10 Bolt with 3.42s and Accel TPI Intake Base
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1987 Chevy Camaro IROC-Z
L98 TPI 350 (5.7L)
TH 700R-4 Transmission
Borg Warner 7.75" 9 Bolt Rear End with 2.77:1 Gears.
Current Mods: LT4 HOT Cam, Comp Cams 1.52:1 Roller Rocker Arms, Edelbrock TES 1 5/8" Headers, Hooker 3" Aerochamber Cat-Back System, Performance Resource Chip, Accel Ignition, K&N Filters, JET TPI Air Foil, All Free Mods, Falken ZIEX Z-Rated Tires.
Best ET (w/o LT4 cam): 14.32 @ 97.7mph
(corrected for elevation)
Soon to Come: 7.625" 10 Bolt with 3.42s and Accel TPI Intake Base
Member
iTrader: (1)
Joined: Oct 2000
Posts: 396
Likes: 0
From: Toms River, NJ
Car: 1991 Camaro Z28
Engine: 350 TPI
Transmission: T56 6-Speed
I get to around 145ish a tank and im pretty close to empty.. Wish I knew why beacuse this car is my daily driver and id love to not spend 30$ a week on gas especially since the price just keeps on rising!!
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1991 Camaro Z28
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CURRENT MODS:
350 TPI, Automatic, Edelbrock Headers, Edelbrock Runners, Flowmaster Exhaust, MSD 8.5mm wires, Autolite Double Platinum Plugs, MSD Cap/Rotar, Random Technology high flow cat, Hypertech Power Chip (160 Deg Thermo), K&N Filterchargers
STEREO MODS:
Pioneer DEH-P6000, 2 JL Audio 12W3 subwoofers in custom hatch enclosure,
Rockford 250a2 Amp, Infinity Kappa 4x6" plates & 6x9's
WEBMASTER: Frank's Thirdgen F-body Website(eventually)
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1991 Camaro Z28
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CURRENT MODS:
350 TPI, Automatic, Edelbrock Headers, Edelbrock Runners, Flowmaster Exhaust, MSD 8.5mm wires, Autolite Double Platinum Plugs, MSD Cap/Rotar, Random Technology high flow cat, Hypertech Power Chip (160 Deg Thermo), K&N Filterchargers
STEREO MODS:
Pioneer DEH-P6000, 2 JL Audio 12W3 subwoofers in custom hatch enclosure,
Rockford 250a2 Amp, Infinity Kappa 4x6" plates & 6x9's
WEBMASTER: Frank's Thirdgen F-body Website(eventually)
Thread Starter
Supreme Member
iTrader: (1)
Joined: Feb 2000
Posts: 2,361
Likes: 1
From: Savannah, GA
Car: 1997 Jeep Wrangler
Engine: 4.0L
Transmission: 5 speed
Axle/Gears: 8.8 rear, 4.56 gears, 4:1 transfer
<font face="Verdana, Arial" size="2">Originally posted by Glenn91L98GTA:
John, have you tried invoking Highway Mode in the eprom?</font>
John, have you tried invoking Highway Mode in the eprom?</font>
No, not yet. Gotta get the BLM's up from 103 to the perfect 128 number first. I'm a little rich.

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86 Camaro Sport
383 Speed-O-Motive Crate Engine, Raptor 700R4 Tranmission, Trick Flow Twisted Wedge G2's, 58mm Accel TB, 3.73 Auburn Pro, SLP Cold Air Induction and Headers, Dynomax Cat-back, Serpentine Belt Setup, Dual IROC Fans, Jamex springs, 16" IROC Rims, 36mm/24mm Sway Bars, Global West Steering Brace. Hotchkis Rear LCA's,Panhard Bar and SFC's.
My Camaro Project
Trip doesn't work and i don't want to know 
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1987 IROC-Z L98,SuperRam,EB 6085's,LPE 219/219 Roller, Crane 1.6RR, EB TPI Base, 58mm TB, ADS 24#, AFPR, K&N, EB TES, Catco Cat, 3" Borla Cat-Back, Accel cap,rotor,distro/other crap, MSD 6AL, MSD Blaster 3, Aluminum DS, 94 Disk Rear, Adjustable Valve, Precision 3.73 Gears, Sub-Frame Connectors, Hotchkis Lower Control Arms, KYB Shocks/Struts, Suspension Techniques Lowering Springs, Polyurethan Bushings all over the place, Moog Upper/Lower Ball joints and Tie Rods ends/Idler Arm,
To see the ROC, Check out the webpage Here

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1987 IROC-Z L98,SuperRam,EB 6085's,LPE 219/219 Roller, Crane 1.6RR, EB TPI Base, 58mm TB, ADS 24#, AFPR, K&N, EB TES, Catco Cat, 3" Borla Cat-Back, Accel cap,rotor,distro/other crap, MSD 6AL, MSD Blaster 3, Aluminum DS, 94 Disk Rear, Adjustable Valve, Precision 3.73 Gears, Sub-Frame Connectors, Hotchkis Lower Control Arms, KYB Shocks/Struts, Suspension Techniques Lowering Springs, Polyurethan Bushings all over the place, Moog Upper/Lower Ball joints and Tie Rods ends/Idler Arm,
To see the ROC, Check out the webpage Here
Supreme Member
iTrader: (1)
Joined: Jul 1999
Posts: 1,334
Likes: 1
From: Key West, Florida!
Car: 89RSconvtZZ4TPI
Engine: ZZ4TPI
Transmission: 700R4 TRIPP TRANNY
92Z28 305TPI 5spd - hollowcat, dynomax catback, nothing else. 26.8mpg on last trip to Key West, running 80+mph. If I backed off and ran at the speedlimit I could probably squeeze 28 or 29.
Checking the ZZ4TPI on this tank but I suspect about 220 to the tank.
71Impala402BBconvt - 10-13mpg.
Oh, 93octane is $1.99, so I put half a tank of 93 and half 89, saves me about 80 to 90 cents every fill-up. Adds up over the year
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Rob P
89RSconvtZZ4TPI
Edelbrock Hi-Flow Intake
SLP Dual Cold Air Intake
1 5/8" Headers
Semi-Siamesed Runners
MSD6AL/AdjFPR/IROC frnt@rear swaybar/wonderbar/steeringbox/alum drvshaft/ Alston SFC/3:23posi disc rear/MAC LCA/H.Adams Panhard Rod/KYB struts/ shocks/
92Z28convt5spd
71Impala convt 402BB
BETTER DRIVING THRU SUPERIOR HORSEPOWER!
Checking the ZZ4TPI on this tank but I suspect about 220 to the tank.
71Impala402BBconvt - 10-13mpg.
Oh, 93octane is $1.99, so I put half a tank of 93 and half 89, saves me about 80 to 90 cents every fill-up. Adds up over the year

------------------
Rob P
89RSconvtZZ4TPI
Edelbrock Hi-Flow Intake
SLP Dual Cold Air Intake
1 5/8" Headers
Semi-Siamesed Runners
MSD6AL/AdjFPR/IROC frnt@rear swaybar/wonderbar/steeringbox/alum drvshaft/ Alston SFC/3:23posi disc rear/MAC LCA/H.Adams Panhard Rod/KYB struts/ shocks/
92Z28convt5spd
71Impala convt 402BB
BETTER DRIVING THRU SUPERIOR HORSEPOWER!
Member
Joined: Dec 2000
Posts: 151
Likes: 0
From: Roselawn, IN, Newton Co.
Car: 92 RS
Engine: VSux
Transmission: Flux Capacitor
I can definetly say giving your car a tuneup makes a world of difference in milage, on my 3.1 I drove 225 miles and still have 1/4 a tank, on the 2.8 I was lucky to get 200 to a full tank, really crappy for a 2.8!
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1992 RS 3.1
1985 POS (SC 2.8 CFI)
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1992 RS 3.1
1985 POS (SC 2.8 CFI)
I pretty sure I do. This is the first "muscle" car I've ever owned and I am reliving my childhood. So that means that my 1988 Firebird will pass everything......except for a gas station.
Look at my sig........I think I get about 160-175 KILOMETERS to a tank. That works out to roughly 100 miles.
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85 Berlinetta Iroc exterior NOW 454 powered, 4.10 gears, 275/60/15 Hoosier Quicktimes and a PILE of other goodies..........YES, it's street driven!
check it out at http://www.bsronline.net/members/rob/rob_specs.html
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85 Berlinetta Iroc exterior NOW 454 powered, 4.10 gears, 275/60/15 Hoosier Quicktimes and a PILE of other goodies..........YES, it's street driven!
check it out at http://www.bsronline.net/members/rob/rob_specs.html
220 on the last tank. all city driving and i like to romp the pedal sometimes. she also needs a tune up.
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1992 Heritage Z/28
5.7 TPI
Auto Tranny
White w/red stripes
Factory Rear Window Shade
Grey Leather Interior
Alpine CD w/alpine's all around
2 12' subs in custom "camaro" box in trunk
G92 performance package w/ a/c
Flowmaster exhaust
only 14k miles on her!
[This message has been edited by 92heritageZ (edited June 03, 2001).]
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1992 Heritage Z/28
5.7 TPI
Auto Tranny
White w/red stripes
Factory Rear Window Shade
Grey Leather Interior
Alpine CD w/alpine's all around
2 12' subs in custom "camaro" box in trunk
G92 performance package w/ a/c
Flowmaster exhaust
only 14k miles on her!
[This message has been edited by 92heritageZ (edited June 03, 2001).]
Guess I loose. I just got 440 on the last tank, and this week it's at 396, with less than eighth left!!!!
That's with a 14 gallon tank, on the '97 Grand Am!!!!!!

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Peace
Jason
Sold my '00 Raptor T/A in August '00.
Ford quality, Job 1! Keeps me in business!
That's with a 14 gallon tank, on the '97 Grand Am!!!!!!

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Peace
Jason
Sold my '00 Raptor T/A in August '00.
Ford quality, Job 1! Keeps me in business!
Between 200-300 to the tank for me.
A few weeks ago, I got 22.5 mpg on premium
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1992 Pontiac Firebird (stock)
- 5.0L V8 TBI / Automatic Trans / Every option, excluding leather
- Killer car audio system:
A few weeks ago, I got 22.5 mpg on premium
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1992 Pontiac Firebird (stock)
- 5.0L V8 TBI / Automatic Trans / Every option, excluding leather
- Killer car audio system:
- Aiwa CDC-MP3 head unit
- Rockford Fosgate 360a2 amp
- pair of 12" MTX Thunder 5000s in a custom box
- Pioneer 3-way 6x9s, soon to add more more more!
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