The track-focused models finally have an ECM that can adjusted by tuning shops. The results are rather impressive.
HP Tuners cracked the engine control module for GM's LT6 and LT7 V-8s, and then a modded ZR1 registered 1180 horsepower at the wheels.
Chevrolet tuners crack the Global B ECU, unlocking major power gains and pushing output well beyond factory figures ...
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