Cable-X calibration question: T56 "gear" teeth?
07-20-2005, 09:27 AM
#1
TECH Fanatic
Thread Starter
iTrader: (1)
Join Date: Jan 2002
Location: Bartlett, IL
Posts: 1,879
Likes: 0
Received 0 Likes
on
0 Posts
Cable-X calibration question: T56 "gear" teeth? Okay, I'm ready to set up my Abbott Cable-X but I'm a bit confused about something.
The formula to set the dip switches is as follows:
Transmission gear (#of teeth) X axle ratio X tire revs/mile = pulses per mile
The pulse per mile is compared to a chart and the switches are set accordingly...
My question is: Since the T56 has a VSS instead of a standard speedo gear, what number do I use for # of gear teeth? From my research I learned that the T56 has a 40 tooth reluctor wheel (40 pulses per driveshaft rotation). Would that be the number I use?
40X3.45X734 = 101,292
Would this be right? What have others used to calibrate their Cable-X?
Thanks.
The formula to set the dip switches is as follows:
Transmission gear (#of teeth) X axle ratio X tire revs/mile = pulses per mile
The pulse per mile is compared to a chart and the switches are set accordingly...
My question is: Since the T56 has a VSS instead of a standard speedo gear, what number do I use for # of gear teeth? From my research I learned that the T56 has a 40 tooth reluctor wheel (40 pulses per driveshaft rotation). Would that be the number I use?
40X3.45X734 = 101,292
Would this be right? What have others used to calibrate their Cable-X?
Thanks.
07-20-2005, 10:43 AM
#2
If your PCM file has been edited for the gear ratio and tire size of your car, just use the speedo output wire of the wiring harness (yellow or green wire) and set the cable-x to 4000 pulses per mile. The PCM has done all of the calculating for you.
That's the easiest way to set it up.
BTW, the T56 has 17 teeth on the reluctor, not 40.
That's the easiest way to set it up.
BTW, the T56 has 17 teeth on the reluctor, not 40.
__________________
91 Z28 LS2 408CI, LS9 Supercharger, LPE GT7 cam, Yank3000, 3450 raceweight.
Latest numbers: 9.71 ET, 141.42 MPH, 1.40 60' , 610 RWHP Mustang Dyno
www.speartech.com
91 Z28 LS2 408CI, LS9 Supercharger, LPE GT7 cam, Yank3000, 3450 raceweight.
Latest numbers: 9.71 ET, 141.42 MPH, 1.40 60' , 610 RWHP Mustang Dyno
www.speartech.com
07-20-2005, 02:21 PM
#3
TECH Fanatic
Thread Starter
iTrader: (1)
Join Date: Jan 2002
Location: Bartlett, IL
Posts: 1,879
Likes: 0
Received 0 Likes
on
0 Posts
Well now I'm confused again. I don't know of any setting on the box for 4000 ppm. The formula is based on the number of teeth x gear ratio x tire revs/mile and that number gives the dip switch settings.
07-20-2005, 02:44 PM
#4
If you can't set it to that, I guess you'll have to run a wire down to the VSS and do it the other way.
What's the range of their settings??
What's the range of their settings??
__________________
91 Z28 LS2 408CI, LS9 Supercharger, LPE GT7 cam, Yank3000, 3450 raceweight.
Latest numbers: 9.71 ET, 141.42 MPH, 1.40 60' , 610 RWHP Mustang Dyno
www.speartech.com
91 Z28 LS2 408CI, LS9 Supercharger, LPE GT7 cam, Yank3000, 3450 raceweight.
Latest numbers: 9.71 ET, 141.42 MPH, 1.40 60' , 610 RWHP Mustang Dyno
www.speartech.com
07-20-2005, 02:56 PM
#5
TECH Fanatic
Thread Starter
iTrader: (1)
Join Date: Jan 2002
Location: Bartlett, IL
Posts: 1,879
Likes: 0
Received 0 Likes
on
0 Posts
Okay, Abbott says that 4000 ppm will work (just as you said) as long as the PCM is programmed ahead of time to do so with my gear ratio and tire diameter in it. Making sense now!
Then I can use the 4000 ppm in the chart for the switches. They also say that I'm risking a bad signal by going with the PCM feed rather than directly from the VSS but suggested I could try it first and if I get a jumpy needle, to run a new wire.
Then I can use the 4000 ppm in the chart for the switches. They also say that I'm risking a bad signal by going with the PCM feed rather than directly from the VSS but suggested I could try it first and if I get a jumpy needle, to run a new wire.
