I guess its a stupid question and I have probably heard about it but never paid attention.What is a PMS? Whats it do? And should I get one. I tune with a Custom Diablo chip.
For PMS info (pertaining to tuning ), see the Tuning child-forum [listed next to 94-95 Talk]. Joe put up a pretty nice thread with pics and specs and all that good stuff.
I'll move this in the tuning section for ya. It's not a stupid question. Up until about a year ago I had no idea what is was or did. Did my share of reading on Stangtuning.com. Check at the sticky at the top of the Tuning boards. You may want to invest in one.