[Taylor1993]

I have a 2010 ss camaro with the l99 auto. Recently had a btr stage 2 cam installed with a circle d triple disc 2800-3000 stall convertor. Also had heads port and polished. Doesnt do this all the time but every once in a while the car will stall out when putting it in drive. Also does the same when putting it in reverse. Seems to do it alot more in reverse. Doesnt do it when applying throttle tho. The car also surges when decelerating. Anybody have any ideas on what might be causing this? A buddy said to check rpm idle, but it idles around 750 to 850 or so. Also the rpms are never steady. They are always bouncing up and down constantly at all speeds. Is this normal in a cammed car? Retune? Vaccume leak? Any help is greatly appreciated thanks in advance