Important tips – Mallory Ignition ACCEL POWER PROCESSOR 79100 User Manual
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Power Processor
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The Power Processor program can only be used with one (1) vehicle at a time. It 
can be reconnected to return the Stock programming at any time. You may also 
reconnect your Processor at any time to change the programming. 
For example; if you have replaced your factory tires with different diameter tires, 
you will want to correct your speedometer, odometer, and automatic transmission 
shift points. 
Simply reconnect your Processor, Change the necessary option(s), and reprogram 
your vehicle. You do not have to return to stock first. 
Important Tips
• The Accel/DFI Power Processor is not legal for use on pollution controlled motor 
vehicles. Although it is possible to pass emission tests with the Power Program 
installed, we recommend you download the stock program back in before you get 
back on the road. 
 
• Feel free to experiment with all 3 programs. There is no way to accidentally 
program the wrong information into your vehicle’s computer. You can make 
changes that you want, change it again and again, without programming your 
vehicle’s PCM until you are absolutely ready. 
 
• Once the Processor starts programming the PCM: 
DO NOT leave the vehicle unattended while programming the PCM. 
DO NOT program your vehicle with a weak or low battery. 
DO NOT disturb the cable while programming. 
DO NOT turn the key off UNLESS instructed by the Processor. 
DO NOT start the engine. 
DO NOT unplug the programmer cable AFTER you pressed, Start Program. 
Any of these actions will interrupt the programming process. 
The programmer is designed to recover from these actions, but they should be 
avoided. 
 
• DO NOT attempt to program the computer in another vehicle without first 
programming the original vehicle back to stock. 
 
• What To Do Before Taking Your Vehicle In For Service. 
If you take your vehicle to a dealer or mechanic for service, you must first 
remove the Processors Power Program and install the stock programming. 
(See page 11 to Return to Stock) Most diagnostic equipment looks for stock 
calibrations and will often overwrite the program if the latest calibration is not 
found in the PCM memory. This will result in the loss of your Power Program 
Tuning data. 
