The name "Speed" is reserved for the Holley EFI Transmission ICF. Your VSS is from the custom Inputs/Outputs ICF.
You can configure the EFI software's Data Monitor (click "E") to include that custom created channel into one of the screen views.
Enter the Data Monitor/Datalogger Edit screen ("E" button at top left corner),
and "drag & drop" the custom channels over to the Data Screen/Log View lists.
You need to scroll to the right to select the custom created channels.
May God's grace bless you in the Lord Jesus Christ.
'92 Ford Mustang GT: 385" SBF, Dart SHP 8.2 block, TFS TW 11R 205 heads, 11.8:1 comp, TFS R-Series intake, Dominator MPFI & DIS, 36-1 crank trigger/1x cam sync, 160A 3G alternator, Optima Red battery, A/C, 100HP progressive dry direct-port NOS, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/off-road X-pipe/shorty headers, S&W subframe connectors, LenTech Strip Terminator wide-ratio AOD/2800 RPM converter, M4602G aluminum driveshaft, FRPP 3.31 gears, Cobra Trac-Lok differential, Moser 31 spline axles, '04 Cobra 4-disc brakes, '93 Cobra booster & M/C, 5-lug Bullitt wheels & 245/45R17 tires.