What is chip and ECU tuning and do I need it?
To tune a Chip/ECU, I basically take the programming from your ECU (this is done in many different ways) search thru the file & find areas in the file which represent specific areas of control in your engine management system, such as fueling, timing, boost and rev limit.
Chip/ECU tuning is then used to manipulate the files in your ECU to optimize these elements to work the best way possible in conjunction with the hard parts used in your car. This allows you to maintain engine longevity & emissions while delivering top performance from your vehicle.
If you have made hardware changes to your car at a certain level it is important to re- tune your ECU. The best way to find out if you need this would be to run your car on a dyno or log data while driving (examine your air fuel ratio) and understand where your ignition timing and boost are set. You will need to get base data as a starting point, and determine if ECU tuning would help improve the performance of your car.
If these elements are not set up correctly, engine damage can and probably will occur and you definitely need to get into tuning your ECU. If you have changed major components affecting the way your engine breathes and what the intake air temp is, you probably need ECU tuning.