Is there any reason I want to keep my stock ECU as an extra on a stage III- setup.
#5
It's nice to have a stock ECU handy for troubleshooting, etc.
You don't necessarily have to own one, just have access to one in a pinch. For example, I sold my stock ECU but I have my brother's stock T box ECU in the garage in case I need it for whatever reason.
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