Where do I find what my typical engine operating parameters should be for a 2000 Pontiac Trans Am WS6? I just added an intake, cai, performance MAF, 85 mm throttle body, and an SLP lid and my car runs rough and then stalls. My MAF reading says it is .31 lbs/min at low and 4.17 lbs/min at high. I'm trying to get a round about figure to locate the problem area. Should I tune it since the addition of these parts? And if so, can I do it with HP tuners PRO?