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Discussing 3.73's are in. in the 99-04 Forum. Is there a break in period? The guys said, drive it home, let it sit ... Modded Mustangs is the premier Ford Mustang Forum on the internet. We discuss all aspects of the Ford Mustang on the forum. Registered Users do not see the above ads. Please Register - It's Free! |
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#1 |
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Regular
2002 Mustang GT
N/A
Join Date: Dec 2007
Location: Baytown, Texas
Posts: 438
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3.73's are in. |
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#2 |
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I Touch Myself Sometimes
1991 GT
19.83 @ 12mph
Join Date: Nov 2006
Location: NJ
Posts: 25,040
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do a few drive cycles is all.
(meaning running the car from when you start it in the morning until it's nice and warm after you have been driving it for 20 minutes )
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![]() MILITARY CREW FOUNDER SCT Custom Tuning, JLT intakes, Aeroforce Interceptor OBDII gauges and PLX widebandsemail joe@tricktuners.com |
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#3 | |
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MM Site Moderator
2004 Mustang GT
12.88 @ 112
Join Date: Aug 2005
Location: Newport News, VA
Posts: 5,731
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when i got mine in they told me to drive, let it cool, drive it, let it cool and then go out and try to rip the gears out of it.
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#4 |
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I Touch Myself Sometimes
1991 GT
19.83 @ 12mph
Join Date: Nov 2006
Location: NJ
Posts: 25,040
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^ that's sounds about right
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![]() MILITARY CREW FOUNDER SCT Custom Tuning, JLT intakes, Aeroforce Interceptor OBDII gauges and PLX widebandsemail joe@tricktuners.com |
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#5 |
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Hardcore Enthusiast
2000 mustang gt
Join Date: Oct 2007
Location: oakwood,va
Posts: 1,012
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yeah dont dump it the first time lol
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2000 GT1chamber flows.summit tips.20%all around.255/45/17 sumitomo htr z tires.an still slow soon to come.cai an o/r h pipe |
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#6 |
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Hardcore Enthusiast
Join Date: May 2007
Location: Savannah, Ga
Posts: 1,263
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That did it. I am getting gears just so I can try to rip them out!
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2007 Explorer Sport Trac, 292 HP, Stock 2002 Mustang GT |
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#7 |
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Regular
2002 Mustang GT
N/A
Join Date: Dec 2007
Location: Baytown, Texas
Posts: 438
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How far off is my speedometer? And what's the easiest way to fix this?
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#8 |
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I Touch Myself Sometimes
1991 GT
19.83 @ 12mph
Join Date: Nov 2006
Location: NJ
Posts: 25,040
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i dunno off hand and a tuner will fix it or if you want the cheaper route a speed cal.
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![]() MILITARY CREW FOUNDER SCT Custom Tuning, JLT intakes, Aeroforce Interceptor OBDII gauges and PLX widebandsemail joe@tricktuners.com |
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#9 |
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Regular
2003 Mustang GT
12.78@106.44
Join Date: Feb 2007
Location: Delano, CA
Posts: 175
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I would say your speedometer will be off by 10mph on the highway, thats what happened to me when I was going 80 I was really going 70. I fixed it with a sct tuner.
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