So I'm new to the whole engine management thing but I'm wanting to kind of get my toes wet. I've read all of the sticky threads about DIY PROMs and read a couple books and feel confident enough to get started tuning my 89 GTA but I still have a couple of questions regarding engine management systems. One of them regards what to start out with. Is it okay to start out with the stock management system or is there a aftermarket kit that anyone recommends? Also, what are some things to avoid when getting into engine management?