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What IAT sensor is needed to run a Holley Terminator X system on the BLS427SCTKBT56? Will it work with the supercharger?


Yes, the Holley Terminator X will work with the supercharged BLS427SCTKBT56.

Use a GM-style IAT/MAT (Manifold Air Temperature) sensor, such as GM P/N 25036751 or an equivalent GM-calibrated sensor compatible with Holley EFI systems.

For supercharged applications, install the IAT sensor after the supercharger in the intake manifold or charge air stream. This allows the ECU to monitor the actual air temperature entering the engine and make proper fueling and timing adjustments.

Important Notes:

  • Terminator X is compatible with supercharged applications.
  • Use a GM-style IAT/MAT sensor with GM calibration.
  • The standard 1-Bar MAP sensor is not suitable for boosted applications. Use the appropriate 2-Bar, 3-Bar, or higher MAP sensor based on the intended boost level.

Resolution:
Install a GM-style IAT/MAT sensor (GM P/N 25036751 or equivalent) in the post-supercharger intake path and configure the Terminator X with the appropriate MAP sensor for the boost level being run. This setup is compatible with the BLS427SCTKBT56.