7747-7427 Swap

[Scooterwrench]

Hey, @Scooterwrench send me a PM here, if you want. Maybe we can figure it out.

I think I got it,just call me **** for brains!!!!

 

[Scooterwrench]

Explain ckecksums in caveman terms.

 

[Scooterwrench]

Well getting closer to doing this swap and start tuning. My PCM is over on the extreme right side,behind the glovebox. There is not a lot of extra wire to have the PCM hanging out so I thought to myself "I need easier access to the EEPROM. I came up with this remote chip holder so all I have to do is open the glovebox flip the ZIF socket handle up,pop the chip out and replace it with the already burned chip with the changes I want to make and lower the handle to lock the chip in. 10sec chip changes!
I bought the memcal adapter from Red Devil River and popped it in and the other parts from various other suppliers.

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[Scooterwrench]

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[Scooterwrench]

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Getting the glovebox liner back in with that box header sticking out the right side was a little tricky and it doesn't have the ribbon cable and connector yet. I think when it comes time to do the actual installation I will probably have to remove the glovebox door. I should have hung it on the back wall of the liner but was worried the A/C duct would keep the liner from going all the way in and I was trying to keep the cable as short as possible.

 

[Scooterwrench]

OK,got a ? for anybody that has burnt chips before. I made an adapter to read the original 7427 prom and all the data was at the in the bottom region of the prom. I changed a few things like injector flow,TCC lockup and spark timing and burnt the new prom. I'm using the 27FS512 EEPROM and according to T-pro the data should be loaded starting from 000000-00FFFF but that puts the data in the top region of the prom. Will it matter? Will the processor be able to read it correctly?