Re-tuning for 3.73s

DrkBlu02GT · 03-12-2007, 10:11 AM

Anyone in the MD/VA/PA area have a tuner to re-tune my 3.73 gears. I dont want to fork out the 300.00 or so just for one thing or pay alot of money to get it done. Thank you

*03gtmustang* · 03-12-2007, 08:13 PM

Youll have to get a chip or XCal either way. Best thing to do would probably get order a chip from here, Modular Depot, or Modular Powerhouse with a mail order tune on it.

WaterDR · 03-12-2007, 08:18 PM

You can't use someone elses tuner. They are coded for the car once you use it unless you put the stock tune back on it. In short, if you use it for your car, the other guy can't.

El Diablo · 03-13-2007, 05:13 PM

You're speedo won't be that far off...just drive it like that for awhile until you need a tune

silverstang04 · 03-13-2007, 05:39 PM

I have a chip I need to get rid of.

Wheat · 03-14-2007, 05:46 AM

Quote:

Originally Posted by El Diablo

You're speedo won't be that far off...just drive it like that for awhile until you need a tune

Unless it's an automatic; the trans won't shift properly, in addition to the speedo being off. With a stick car you can also use a speedcal or abbott box, but if a tune is in your future, get a chip or hand-held so you don't fork over cash for a part that will soon be unnecessary.

DrkBlu02GT · 03-14-2007, 09:07 AM

its a manuel transmission

I was looking at this speed-calibrator-94-04 How does it work and where would you plug it into?

DrkBlu02GT · 03-14-2007, 03:27 PM

your thoughts on that above

Wheat · 03-15-2007, 06:18 AM

What it does is ratio the signal from the speed sensor to the PCM; that one looks like it plugs in right at the speed sensor connector. This is the kind of device I mentioned above. There are several dip switches inside the unit; you set them in a particular order to match the correction factor you need to make the speedo read properly (a list is included with the device). If you currently have 3.27 gears and are installing 3.73s, your speedo will read fast, so divide 3.27 by 3.73 to come up with a .876 correction factor, set the switches to most closely match .876 and you'll be real close.

DrkBlu02GT · 03-15-2007, 07:34 AM

Quote:

Originally Posted by Wheat

What it does is ratio the signal from the speed sensor to the PCM; that one looks like it plugs in right at the speed sensor connector. This is the kind of device I mentioned above. There are several dip switches inside the unit; you set them in a particular order to match the correction factor you need to make the speedo read properly (a list is included with the device). If you currently have 3.27 gears and are installing 3.73s, your speedo will read fast, so divide 3.27 by 3.73 to come up with a .876 correction factor, set the switches to most closely match .876 and you'll be real close.

oh ok thank you for the helpful info Wheat.

StangGT804 · 03-15-2007, 12:48 PM

get a speedcal! cheap!!!

03-12-2007, 10:11 AM	#1 (permalink)
DrkBlu02GT Devil Chick Join Date: Jul 2005 Location: Maryland Posts: 198	Re-tuning for 3.73s Anyone in the MD/VA/PA area have a tuner to re-tune my 3.73 gears. I dont want to fork out the 300.00 or so just for one thing or pay alot of money to get it done. Thank you __________________ Dark Blue 02 GT 2002 Mustang GT 5spd Girls Love To Get Dirty Too!!!

03-12-2007, 08:13 PM	#2 (permalink)
03gtmustang Super Moderator Join Date: Jan 2005 Location: Northern Va Posts: 3,241	Youll have to get a chip or XCal either way. Best thing to do would probably get order a chip from here, Modular Depot, or Modular Powerhouse with a mail order tune on it. __________________ D&D Auto Detailing -Dan

03-12-2007, 08:18 PM	#3 (permalink)
WaterDR Administrator Join Date: Sep 2004 Posts: 6,370	You can't use someone elses tuner. They are coded for the car once you use it unless you put the stock tune back on it. In short, if you use it for your car, the other guy can't. __________________ Black 2000 GT Vert: Novi-2000 with Intercooler (375rwhp @ 9 psi); Tune by Kauffmans; Roush 380R Body kit; Steeda Subframes; Steeda Strut Tower Support; Deep Dish Bullets; FRPP 4:10's; SCT 4 Position Chip with four custom tunes; Steeda CAI; C&L Pleum; BBK 75 TB; SLP Loudmouth; SLP Catted X-Pipe; Bullitt Suspension; UPR Conrol Arms; Focus Fuel Pump My Car My Email

03-13-2007, 05:13 PM	#4 (permalink)
El Diablo Senior Member Join Date: Mar 2006 Posts: 143	You're speedo won't be that far off...just drive it like that for awhile until you need a tune __________________ 2001 PROCHARGED GT 401RWHP 416RWTQ @ 9.5#'s BOOST

03-13-2007, 05:39 PM	#5 (permalink)
silverstang04 DTP Join Date: Jul 2006 Location: Plano Posts: 290	I have a chip I need to get rid of. __________________ Intercooled Procharger p-1sc-2,Steeda tri ax short shifter, steeda caster camber plates,Black Fr500's,255 40 17x9's front, 315 30 18x10's back, SCT2 tuner,BBK cold air, BBK 75mm T/B Plenum Combo,Mac o/r x pipe, flow master 50's, HPM Mega Bite jr lower control arms, Eibach sport line springs, KYB struts,KYB 8 way shocks in rear. FRPP 3.73's,FRPP Aluminum Drive shaft, [/center]

03-14-2007, 09:07 AM	#7 (permalink)
DrkBlu02GT Devil Chick Join Date: Jul 2005 Location: Maryland Posts: 198	its a manuel transmission I was looking at this speed-calibrator-94-04 How does it work and where would you plug it into? __________________ Dark Blue 02 GT 2002 Mustang GT 5spd Girls Love To Get Dirty Too!!!

03-14-2007, 03:27 PM	#8 (permalink)
DrkBlu02GT Devil Chick Join Date: Jul 2005 Location: Maryland Posts: 198	your thoughts on that above __________________ Dark Blue 02 GT 2002 Mustang GT 5spd Girls Love To Get Dirty Too!!!

03-15-2007, 06:18 AM	#9 (permalink)
Wheat Member Join Date: Feb 2007 Location: Northern Virginia Posts: 49	What it does is ratio the signal from the speed sensor to the PCM; that one looks like it plugs in right at the speed sensor connector. This is the kind of device I mentioned above. There are several dip switches inside the unit; you set them in a particular order to match the correction factor you need to make the speedo read properly (a list is included with the device). If you currently have 3.27 gears and are installing 3.73s, your speedo will read fast, so divide 3.27 by 3.73 to come up with a .876 correction factor, set the switches to most closely match .876 and you'll be real close.

03-15-2007, 12:48 PM	#11 (permalink)
StangGT804 Shut Up & Lift Join Date: May 2005 Location: Chesterfield, VA Posts: 1,281	get a speedcal! cheap!!! __________________

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