hexdmy

With Nistune, you are able to re-calibrate the factory Nissan ecu. If you are familiar with tuning Nissan ecu's , the investment in tuning time and the end result will be considerably better than what you would get using a piggyback. Piggyback controller modify either the inputs to our outputs from the factory ecu. The problem with this, is that there are often many control stratagys in the factory ecu that you have to work against to achieve the desired results. Sometimes the end result, even in the hands of someone who is a competent tuner, are less than ideal. Some of the more basic piggyback, such as the SAFC, can be downright dangerous. As a simple example, let's say we put bigger injector in a motor with the goal of raising the boost and making more power. If we were to use a SAFC to alter, or skew the signal going to the ecu to effectively lean out the mixture, we are telling the ecu that the engine is under less load than it actual is. The problem with this is generally, the ecu will advance the ignition timing when engine load decreases. I think you can see the issue with this.

Assuming that he or whoever was doing the tuning, was mindful enough to thoroughly familiarize themselves with the Nissan ecu and the Nistune tuning software, I'm sure that any competent engine calibrator could do a great job. If the person who you are considering is not willing to put the time into what I just mentioned, you may want to use an alternative system (stand alone) that they are familiar with or find someone else who is familiar with Nistune to tune your car.