Originally Posted by Jonpro03
will it still have the run in the car?
if you mean will it work? yes. it'* actually how you stack multiple tunes onto one chip. since the ECM doesn't know about it, it will still try to access it as a 32KB block, but if you switch the highest address pin to 5V or ground, you control which 32KB it sees.
since the same tune is stacked twice, it more or less forces the ECM to read it correctly regardless of any offsetting since you're sticking 64KB of data onto a 64KB chip.