just becuase someone doesnt have internals does not mean that a chip will not improve performance. interals make a diffrence, but the stock ecu, works great for daily driving but if you want more performance, it only does better to chip as long as you get a decent program, i RECOMMENDED to that guy the spoon chip cuase i use it. YOU DO NOT NEED INTERNALS FOR A CHIP. you just dont. ManTiS.. whats your engine, whats your 1/4 mile time?