The Lingenfelter Performance Engineering STOV-001 Speed To Voltage Converter and MPH Activated Switch incorporates a precision 32-bit timer to realize microsecond precision over a very wide operating MPH range.

Designed to work with most late model GM vehicles that have a 4000 pulse per mile (PPM) vehicle speed output from the ECM/PCM including
• 1997-2008 Corvette (C5 and C6)
• 1998-2002 LS1 Camaro and Firebird
• 2004-2006 GTO
• 2003-2006 SSR
• 2006-2008 Trailblazer SS and other 5.3 and 6.0L S/T trucks
• 1999-2008 CK trucks (Tahoe, Yukon, Escalade, Sierra, Silverado)
• Fully encapsulated (potted) construction for increased durability.
• Rated for operation at up to 185 degrees F (85 degrees C).
• Outputs rated for up to 2.0 amps. For higher current levels a relay should be used.
• Both the normally on and the normally off outputs can be used simultaneously.
• Offers the following output capabilities:
• GM ECM/PCM vehicle speed output frequency to voltage conversion
• MPH activated switch with Normally Open and Normally Closed ground active outputs.
• Stage/gear shift simulator for boost controllers and other devices that need to see a gear shift position switch output to changes stages, such as:
• AMS-1000 boost controller from NLR Systems
• Innovative Turbo Systems MSBC01 Multi-Stage boost controller

• Outputs have a self protect feature.
• Operating voltage range: 9.0 to 16.0 volts.
• Input signal type: PPM square wave 12 volt DC.
• Input signal impedance: 15k Ohm.
• Current draw: less than 0.1 amp plus current draw of device being controlled.