ok i just got my car running after adding mac headers, msd 6a ignition, msd coil, 52 mm throttle body, 24lbs svo injectors, springs, pushrods, lt4 km, and nos dry kit. ok everything works great car runs awsome, but got i question. when i start the car it dosn't matter if it's warmed up or not the rpm go to 1,500 then slowly goes down to 1,000. it takes about 5-6 seconds to go down. is it just because it needs tuned or what ??

 

Thats normal mine does the same thing.