Originally Posted by speedytang
Did not miss the question but it is alot to type when you can read the manual yourself. The one main difference is it is boost sensitive. I am over 500 rwhp and that is with nothing fancy and my car does not need boost to run hard since I am at full timing till I reach boost. When the weather changes so can my tune in minutes, add cam, heads, anything I just go to the handheld and in less than a minute everything is ready for the additional power. Chip you must reprogram for any changes and if it is out of the range of the parameters during normal driving your dealing with a sluggish car till the parameters that it was tuned at come back. Chips are not cheap to keep and if you like to play with cars everytime you make a change you will need a tune. Always choices and some choices are better than others.