I have the serial interface with '99 and '04 Corvette tuning. My '99 got smacked up. Insurance totaled it and I am now the proud owner of an '05 C6. In reading through my portal's "Order Upgrades" (which is very detailed BTW) it would seem I need to upgrade to the MPVI interface ($149 or $199 + $10 shipping) and then I could add my '05's VIN for two credits ($100).
This is all well and good but I no longer have a need for the '99 tuning capability. Is there any way to credit this toward the '05 tuning similar to the 3/4 credit upgrade? A long shot I know but I figured it was worth asking.