yeah ur probably right. but u could say that about anything. why dont dont they do alot of things. it,s for reliabilty and cost cutting. for instace why dont they port, polish, heads or suchlike, the list goes on to what they could do, but the things cost time and money, and most people just want a car thats works well and the manufacturers probably dont want a load of cars they run the risk of recalling because of something that could malfunction. in my opinion. :)