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April 6th, 2010, 12:07 AM
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#1 |
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Regular
03 GT, 68 coupe
Join Date: Feb 2007
Location: N. Myrtle Beach, SC
Posts: 330
 iTrader: 1 reviews
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strange as hell
on a 175 mile trip, my car used 6.7 gallons
right at 26 mpg, most of the time doin 80mph what i find strange about that is my car idles like hell. it surges. from time to time stalls on its own. sputters and spits. and runs fairly rich. every tune up item is up to date on the car 26 mpg is really good, not complainin just strikes me as really odd. ive done this experiment several times, and the results repeat. Car is stock cept exhaust. thats it |
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April 6th, 2010, 12:08 AM
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#2 |
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Hardcore Enthusiast
01 V6/95 Chevy 1500
Tang...IDK/Rado...........Slow as a Turtle
Join Date: Feb 2010
Location: Behind Obama
Posts: 1,912
iTrader: 0 reviews
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Dang that is strange....
__________________
 Co-Owner Hooker Trade industryFX4 CREW Crew Member #4 Say Bye to McMustang5.0 http://www.moddedmustangs.com/forums...mcmustang.html |
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April 6th, 2010, 12:13 AM
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#3 |
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Regular
04 GT
Join Date: Feb 2009
Location: NWindiana
Posts: 187
iTrader: 3 reviews
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ford's secret hybrid.... ? who knows. i wouldn't complain about 26mpg but maybe a tune would help with the sputtering and stalling. is it an auto or 5 speed? maybe disconnect your battery let it sit and reconnect it. might help with the idle and such. don't know though.
__________________
 If the Westboro Baptist Church is allowed to protest at funerals of slain soldiers than I think I will just have to back the @$$ end of my stang right up to their doors early on a Sunday morning and dump the freakin clutch... 
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April 6th, 2010, 12:14 AM
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#4 | ||
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Penetration before detonation
2001 Mustang GT
13.85 @ 100.5 w/3800 ft. DA
Join Date: Jan 2008
Location: Daytona Beach, FL
Posts: 2,174
 iTrader: 0 reviews
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Mods? Tunes?
Sounds to me like a tuning issue. No CEL?
__________________
Military Crew E-5/SSgt White Mustang Crew Member #5 315s Crew Co-Founder
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April 6th, 2010, 12:26 AM
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#5 |
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Regular
03 GT, 68 coupe
Join Date: Feb 2007
Location: N. Myrtle Beach, SC
Posts: 330
iTrader: 1 reviews
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i do have a cel, but thats from my o/r h pipe. my car has never been right after i found bad wiring harnesss, even after i fixed it. maybe it messed somethin up in the ecu
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April 6th, 2010, 12:32 AM
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#6 | ||
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Penetration before detonation
2001 Mustang GT
13.85 @ 100.5 w/3800 ft. DA
Join Date: Jan 2008
Location: Daytona Beach, FL
Posts: 2,174
iTrader: 0 reviews
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Hmm...are you sure the only codes being thrown are from the H pipe? As in, have you pulled the codes recently?
Might ought to try and do what Stangpride suggested with the battery. Our PCMs, when disconnected from the battery, will reset- you'll still have your tune- but it will reset all the parameters that are adjusted on the fly. Disconnect your battery for a few minutes, re-connect, and start it up and let it learn the idle and fuel characteristics. Can't do much harm.
__________________
Military Crew E-5/SSgt White Mustang Crew Member #5 315s Crew Co-Founder
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April 6th, 2010, 12:46 AM
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#7 |
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Hooo Ha Ha
1997 Mustang GT
11.65 @ 115
Join Date: Apr 2009
Location: Pasadena MD
Posts: 9,743
iTrader: 10 reviews
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I would just not complain. I get 18mpg
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 410rwhp 520rwtq @ 12.9 psi |
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April 6th, 2010, 01:00 AM
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#8 | ||
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Penetration before detonation
2001 Mustang GT
13.85 @ 100.5 w/3800 ft. DA
Join Date: Jan 2008
Location: Daytona Beach, FL
Posts: 2,174
iTrader: 0 reviews
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I don't know how he's running rich and getting that kind of fuel mileage...
My personal best was 29.X mpg @ 75 mph on a stock tune and stock gears.
__________________
Military Crew E-5/SSgt White Mustang Crew Member #5 315s Crew Co-Founder
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April 6th, 2010, 01:12 AM
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#9 |
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Enthusiast
2002 GT, 1989 GT, 1984 GT
Join Date: Dec 2009
Location: Bakersfield, CA
Posts: 609
iTrader: 0 reviews
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yea i wouldn't be asking why i got 26mpg. i would kind of not talk about that so the car wont hear you and change tomorrow. i would be getting to the stalling and cutting out issue.
just me...
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April 6th, 2010, 02:11 AM
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#10 |
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Hardcore Enthusiast
11 Mustang GT
12.86@109 on 275/40r17 radials hitting 5th gear on the top end.
Join Date: Jan 2010
Location: Greenville/Spartanburg/Lancaster, SC
Posts: 1,780
iTrader: 3 reviews
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Best I've ever gotten is 27 in mine, I just went to Spartanburg (Mr. Big Jeep territory lol) on friday and came back sunday night and averaged 25 mpg running 85 on the interstate.
__________________
Camber Bolts $20 ship OBO! 2011 5.0, 2nd MT82, 3.73's, Amsoil SS 10w-30 & MTG, GT500 A/B, Barton Bracket, BBR Billet LCAs, JLT Separator, FRPP Strut Tower Brace, BMR Springs/Adj Panhard Rod/LCA relos, Koni Sport Shocks/Struts, GT500 USM's |
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April 6th, 2010, 05:55 PM
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#11 |
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Regular
03 GT, 68 coupe
Join Date: Feb 2007
Location: N. Myrtle Beach, SC
Posts: 330
iTrader: 1 reviews
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like i said, im not complainin. i have unhooked the battery several times.
but i am with wrenchhead. i talked about tradin the car, in the car. big mistake. now its pissed |
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April 6th, 2010, 06:28 PM
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#12 |
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Hooo Ha Ha
1997 Mustang GT
11.65 @ 115
Join Date: Apr 2009
Location: Pasadena MD
Posts: 9,743
iTrader: 10 reviews
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My cars the same way. Stuff started to break the moment I wanted to sell it.
Damn car. It also knows when im trying to get chicks with the car, cause the steering rack moans and creeks
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410rwhp 520rwtq @ 12.9 psi |
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April 6th, 2010, 06:39 PM
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#13 |
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Regular
2004 mustang GT
12.5 @115
Join Date: Feb 2008
Location: vermont
Posts: 195
iTrader: 0 reviews
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 I love these cars. Mine gets 24 on the highway and thats with 450 rwhp. I do drive like grandma though.
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April 6th, 2010, 06:40 PM
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#14 |
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Hardcore Enthusiast
01 V6/95 Chevy 1500
Tang...IDK/Rado...........Slow as a Turtle
Join Date: Feb 2010
Location: Behind Obama
Posts: 1,912
iTrader: 0 reviews
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^ Lolz....
__________________
Co-Owner Hooker Trade industryFX4 CREW Crew Member #4 Say Bye to McMustang5.0 http://www.moddedmustangs.com/forums...mcmustang.html |
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April 6th, 2010, 06:44 PM
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#15 | |
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Hardcore Enthusiast
97 Mustang GT
slower than the speed of smell
Join Date: Feb 2008
Location: rochester hills, MI
Posts: 2,248
iTrader: 1 reviews
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have you cleaned the iac and replaced the tps recently?
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April 6th, 2010, 06:51 PM
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#16 |
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Regular
03 GT, 68 coupe
Join Date: Feb 2007
Location: N. Myrtle Beach, SC
Posts: 330
iTrader: 1 reviews
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Iv cleaned the iac, cleaned the throttle plate, cleaned out the plenum, checked the resistor inside the mafs. but no, iv not done anything with the tps
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April 6th, 2010, 09:25 PM
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#17 |
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eating 1 ricer at a time
2002 mustang GT
not sure only ran on the streets so far!
Join Date: Feb 2010
Location: Missouri
Posts: 3,444
iTrader: 3 reviews
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On the start my car doesn't like to start up the first time some times I am guessing because of not enough back pressure at start???? but I don't have your issues. Definatly get a good tune going on!
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Power in the hands of a few  Buy your coffee from 02gt89 I guarantee better than starbucks click here |
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April 6th, 2010, 09:27 PM
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#18 |
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Enthusiast
2004 Mustang GT
Join Date: Mar 2009
Location: Fort Worth
Posts: 640
iTrader: 0 reviews
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Best i ever got was 21. worst was 6 mpg
__________________
My Car- 2004 Mustang GT Her Car- 2011 V6 Auto Premium Saving up for either a 2009 Shelby GT500 or a 2011 5.0...Can't decide! |
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April 6th, 2010, 09:35 PM
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#19 |
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eating 1 ricer at a time
2002 mustang GT
not sure only ran on the streets so far!
Join Date: Feb 2010
Location: Missouri
Posts: 3,444
iTrader: 3 reviews
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Best I ever got was 28 and that was on 93 octane on the way back from texas from a BP, the worst I ever had was some where down in the 8 - 10 range when I was pissed one day and spent all day racing up and down an abandoned local highway! (only used by farmers now! its LONG FLAT and STRAIGHT!
__________________
Power in the hands of a few Buy your coffee from 02gt89 I guarantee better than starbucks click here |
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April 7th, 2010, 11:41 PM
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#20 | |
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Hardcore Enthusiast
11 Mustang GT
12.86@109 on 275/40r17 radials hitting 5th gear on the top end.
Join Date: Jan 2010
Location: Greenville/Spartanburg/Lancaster, SC
Posts: 1,780
iTrader: 3 reviews
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There's a road like that near me, that's where I've hit my max speed at.
__________________
Camber Bolts $20 ship OBO! 2011 5.0, 2nd MT82, 3.73's, Amsoil SS 10w-30 & MTG, GT500 A/B, Barton Bracket, BBR Billet LCAs, JLT Separator, FRPP Strut Tower Brace, BMR Springs/Adj Panhard Rod/LCA relos, Koni Sport Shocks/Struts, GT500 USM's |
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