I never heard that, I don't see why you couldn't change it after it has been set back to stock. Your best bet would be to email hypertech and ask them, but make sure they aren't lying to you to just sell you a new one.
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04 Cobra
densecharger CAI
BBK off road X pipe
Custom Electronic Exhaust cut outs
Tuning via Diablo Predator
Ported and polished Throttle body and plenum
Line locker (for the smoke shows)
Stock boost
412 rwhp 379 rwtq
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