Got PMS question ask in here? There seems to be a lot of interest in this so ask all questions in here and go to Troy's informative site @ www.stangtuning.com 
This is copy and paste from another thread I didn't want to hi-jack and overwhelm with Q&A on this subject.
This is an O4 AFM PMS by EFI Systems
Main Menu Options
(Each option has a table)
This is the Part Throttle table for fuel
This one is for timing
This is my Idle table
This is realtime moitoring of what I watch when driving
O4 PMS features
* Now comes with global fuel adjustments, which means you can offset the mass air for different sized injectors.
* Air charge temp and Water temp fuel and timing adjustments can now be made from -40 to +250 degrees
* TPS volts are now adjustable: What this means is if you want 1.05 to be idle you put that in. The same with W.O.T. - you tell the PMS what volts.
* NEW! Easier to use controller with adjustments down to 500 rpm increments starting at 2000 rpm
* NEW! for 2004 single data display screens let you monitor spark timing, injector function, oxygen sensor, water temp, air charge temp., mass air voltage and manifold pressure/vacuum
* Start fuel setting, which controls the injector when the starter is turning the motor over. This gets rid of the hard starting with 42 lb. injector or bigger.
* Air Fuel Mixture fully adjustable.
* Idle Mixture and Timing fully adjustable.
* Stand alone turn on is now adjustable: The stand alone is set up to turn on at 3500rpm, which can be adjusted from 2000 rpm to 5600 rpm. The factory EEC has no control in standalone mode. This gives us even better fuel and timing control and now the Rev limiter can be moved to as high as 9900 rpm with a faster processor.
* Total spark and rate-of-advance fully adjustable.
* Two step rev-limiter.
* Two programmable RPM/Throttle output accessory control switches.
* Tunable Nitrous Oxide Adjustment Table.
* Tunable Turbo or Supercharger timing and fuel adjustment up to 30lb of boost.
* Purple anodized, finned aluminum case resists corrosion, dirt and moisture!
* Easy installation in less than one hour.
* Plug in and Run” installations requires no programming—Just start it up and go!
* Increased RAM, EPROM, and EEPROM Internal Memory Capacity!
* Easy “User Friendly” operation—detailed owner’s manual explains all functions.
This is copy and paste from another thread I didn't want to hi-jack and overwhelm with Q&A on this subject.
You don't need a laptop with the O4 PMS but if you want to save data logging info you have to have one. Other than that it can be completely tuned by pushing a few buttons and you have realtime monitoring in your view. Here are a few screens that what it can do for you so you get the jist of it ..BlueOvalStangGT said:
This is an O4 AFM PMS by EFI Systems
Main Menu Options
(Each option has a table)
This is the Part Throttle table for fuel
This one is for timing
This is my Idle table
This is realtime moitoring of what I watch when driving
O4 PMS features
* Now comes with global fuel adjustments, which means you can offset the mass air for different sized injectors.
* Air charge temp and Water temp fuel and timing adjustments can now be made from -40 to +250 degrees
* TPS volts are now adjustable: What this means is if you want 1.05 to be idle you put that in. The same with W.O.T. - you tell the PMS what volts.
* NEW! Easier to use controller with adjustments down to 500 rpm increments starting at 2000 rpm
* NEW! for 2004 single data display screens let you monitor spark timing, injector function, oxygen sensor, water temp, air charge temp., mass air voltage and manifold pressure/vacuum
* Start fuel setting, which controls the injector when the starter is turning the motor over. This gets rid of the hard starting with 42 lb. injector or bigger.
* Air Fuel Mixture fully adjustable.
* Idle Mixture and Timing fully adjustable.
* Stand alone turn on is now adjustable: The stand alone is set up to turn on at 3500rpm, which can be adjusted from 2000 rpm to 5600 rpm. The factory EEC has no control in standalone mode. This gives us even better fuel and timing control and now the Rev limiter can be moved to as high as 9900 rpm with a faster processor.
* Total spark and rate-of-advance fully adjustable.
* Two step rev-limiter.
* Two programmable RPM/Throttle output accessory control switches.
* Tunable Nitrous Oxide Adjustment Table.
* Tunable Turbo or Supercharger timing and fuel adjustment up to 30lb of boost.
* Purple anodized, finned aluminum case resists corrosion, dirt and moisture!
* Easy installation in less than one hour.
* Plug in and Run” installations requires no programming—Just start it up and go!
* Increased RAM, EPROM, and EEPROM Internal Memory Capacity!
* Easy “User Friendly” operation—detailed owner’s manual explains all functions.
