[SSDiv6]

9:1 COMPUTER
A computer is defined as any device (electrical, mechanical,
pneumatic, hydraulic, etc.) that activates any function of,
or in any way affects the operation of, the vehicle based on
measurement, sensing, processing, etc. of any data related
to the performance of the vehicle. Except those installed on
stock vehicles by the new-vehicle manufacturer for the proper
operation of such vehicle, no vehicles may be equipped with
computers. Per Class Requirements, OEM or aftermarket
OEM-type electronic fuel injection permitted. Electronic fuel
injection must be closed, OEM-type system; i.e., may monitor
only engine functions. Monitoring of vehicle performance
criteria, wheel speed, driveshaft speed, vehicle acceleration,
etc. by fuel-injection system prohibited. Any form of torque
management (e.g., launch control, traction control, height
ignition correction, etc.) is prohibited. All related wiring, sensors,
etc. must be identifiable to the tech inspector. See General
Regulations 9:11 TRACTION CONTROL.

During NHRA competition, a portable computer (e.g., laptop,
PDA, Palm Pilot, programmer, etc.) must be securely mounted
when located in driver’s compartment at any point beyond the
staging area ready line. All functions or values must be preset
prior to this point.

Per Class Requirements, timed or rpm-activated shifters and
the like permitted, but all automated functions must be preset
before the run. Timer may display only timer amount dialed in;
analog or digital display permitted. Devices may be removed at
any time at discretion of NHRA Technical Department.