Quote:
Originally Posted by mrg666
JR factory tune works with stock MAP sensor; it even throws a CEL if you upgrade the MAP sensor. If the tune is not factory, you need to ask this question to your tuner. They will tell you which sensor is required since tune needs to be calibrated for the specific sensor.
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Yes, but only because it works on a set of assumptions. When every factory tuned car is running the exact same setup otherwise, you can do this.
This is also why even a header swap will make the Jackson Racing factory tune not work.