The PCM will freak out at 7228 rpm. Beyond that the opti signal might be too corupt or the PCM too slow to read it.
Most of the tables will be maxed at 6000-6400 rpm too.
The opti signal is capped at 7228 rpm and the injectors at 7245 rpm in the code. These limits can be raised but the engine operation might become unstable.
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