i have a 2007 monte carlo with the ls4 in it. i recently built the engine with the following parts installed jegs fabricated aluminum intake, trick flow 220 heads with 2.055/1.60 valves, full roller rockers shaft mounted, 102 mm throttle body, cold air intake, dod delete plate, and a ls9 camshaft. my question is not sure where to start with the tuning. the car doesnt want to idle very long and this is definately a newb question but what ecm do i have? and which perameters should i begin to change?