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Speed-Cal, 1994-2004, Manual Transmission

DM-Part#:  9910ER MFG-Part#:  SPEED CAL-ER

Availability: In stock

Speed-Cal to correct your speedometer when replacing your transmission, changing rear end gears or tire size.
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Use this Speed-Cal when installing a 1999-2004 5-speed or 6-speed manual transmission into a 1996-1998 mustang. This Speed-Cal will correct your speedometer using this combo. Also used when changing rear end gears or tire size, to correct the speedometer on all 1994-2004 5 speed manual cars. Will also work on 1994-1998 automatic cars. Part has one year warranty. This blog post contains the installation instructions: SpeedCal FAQ
Additional Info
Additional Info
DM-Part# 9910ER
Truck Line No
Oversized No
Fits Model Year 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
Fits Model Coupe, Convertible, Fastback, Hatchback
Install Time Coming Soon!
Install Difficulty N/A
Customer Reviews (4)
Fixed it
Had to find instructions online, would have been better if it came with them but the ones online were pretty good. The price was lower or about the same as other places that I looked, although I think the price is a bit high for a part like this. Overall, it was pretty good, it fixed my speedometer so I'm happy. Review by Matthew (Posted on 10/31/2015)
works perfect and a must for a 99 t45 in a 96 gt
I swapped a 99 t45 tranny into a 96 mustang gt and thanks to this I have a speedometer that works cause when i got the tranny off a forum I didn't think about it having a different sensor.
install was very easy to do only needed to take shifter boots off and they supply everything you need to wire it in except a punch or common screwdriver(I used a flathead jewlers screwdriver) to get two wires out of the speed sensor plug. they explain everything perfectly on this website but how to really get it tuned.
That wasn't a problem at all cause all I had to do is call, set the speedcal to what they tell you, set your tripometer to 0, use gps to measure and drive ten miles(cause your speed will still be way off therefore your tripometer will be way off), then call back and tell them what your tripometer says and they will tell you the correct code. all in all great product and great customer service from them.
Review by Ian (Posted on 8/12/2015)
Works great, accurate, easy installation
Easy to install. My 96 Cobra got a new T45 from a 99. Speedo was reading at about 4 times what I was actually doing. Installed the calibrator and it works great. Checked speed next to buddy's car and seems to be pretty accurate, even with 20's. Thanks guys! Review by Mike (Posted on 12/3/2014)
1996 Mustang with a 2002 T-5 t
I bought this so I could use the 99-04 Mustang t-5 transmission in my 1996 Mustang. Installation was exactly as described per instructions. I called tech to help me with setting up the device due to the transmission swap. Tech told me how to set the pins, and it works perfect! Thank you!!! This part made the swap painless!

Review by Douglass (Posted on 9/10/2014)
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Product Questions

Which speed cal do I use to put a tr3650 into a 1998 Mustang
I have a 1996 SVT Cobra with a T45 (dont know if its out of a GT or Cobra) so i have 4.10s and was wondering if this will work as my sensor has the 23 tooth in it thankfully not chewed up and is around 20 miles off right now. been that way since ive bought here 2 years ago. now with that said, will i need to install the factory 19 tooth gear and then install and calibrate ? Is there an area on site that i can download the install manual as my friend has given me the one i have now ?
do you know the binary code for 327 to 410 for a 2001 bullit with TR3650 (tire height is 26.66)
1st - 3.37; 2nd - 1.99; 3rd - 1.33; 4th - 1.00; 5th - 0.67;
I have a 97 mustang gt that I just swapped my old 5 speed t-45 with a bent shift fork out for a newer t-45 out of a 2000 mustang gt . Will this fix my tach reading since I switched over to a magnetic speed sensor rather than mechanically driven? Or will I have to swap out tail shaft housings? Thank you
I have a 1996 Cobra that I recently swapped from a T45 (in which I was using this speedcal with 4.56s) to a Tremec Magnum. I'm still using this speedcal. Will it work with the following setup? If so, what are the dip switch settings.

Tire Height: 25.68
Tire Revs per Mile: 785.7
Rear Gears: 4.56
Transmission Gear Ratios: 1st 2.97; 2nd 2.10; 3rd 1.46; 4th 1.00; 5th 0.74; 6th 0.50
I have a 2003 mustang gt with the tr3650 and I am replacing it with a t45 off a 1996 cobra. Will this convert my sensor output to the correct one and if so what are the settings I need to change?
will this fix my transmission after a 1998 4r70w with a vss to a 2001 4r70w with an oss style swap? the transmission will not shift when put into drive, reverse, neutral, ect. I can physically move the trans but will not communicate with the computer to actually go into gear.