GM engine controllers and performance calibrations
Chevrolet Performance engine controller kits, wiring harnesses and calibrations for LS, LT and E-ROD crate engine swaps, plus the GM performance calibrations for exhaust and intake kits.
What is here
The Chevrolet Performance controller kits that make a crate engine run in a swap: the ECM, the engine harness, the pedal, the mass airflow sensor and the oxygen sensors, pre calibrated for the engine. Also the E-ROD emissions kits and the calibration part numbers GM assigns to its performance exhaust and intake kits.
Before you order
Pick the controller kit for the exact crate engine and transmission type, since automatic and manual kits differ. The listing calls out the engine it matches.
Why buy it from a GM dealer
A GM controller kit arrives calibrated by GM for the engine, which is the difference between a swap that starts on the first try and one that spends a month on the dyno.
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