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Tuner
HP tuners l5p unlocked ECM and Bench-Force harness
I am trying to read a hp tuners unlocked ECM with a Bench-Force power block and L5P harness. Its not working, its saying "Detect Protocol Failed"
Any ideas if what I am doing is even possible, or must these be installed in the truck to read/write?
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Technically that ECM cannot be read, so a read is simulated. The message you're receiving, however, sounds like a wiring issue or a dead ECM.
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Tuner
Yeah thats what I am thinking. Should I contact HPT Support?