Reprogramming ecu to match new keys

hi guys, have any of you had your ecu reprogammed to match a new key and ignition barrel?
If so how much did it cost and what were the requirements?

you honda dealer can d0 it for you

key will cost about $50 programming is another 50 to 80

If I were at home i could check the invoice.

I bought new key + remote and honda reprogrammed both for free.

They initially wanted to charge 50 to program key and remote so i took it to those lock smith places (cost 5 buks to program) but the key is like locked only honda dealer can program them, but they didn't charge coz it didn't work.

So took it back to honda and they did it for free...

is it the key that you need to program only? what if you have an alarm do you have to worry about the remote?

i dont think they program the key. They reprogram the ecu to accept the key. The ecu can hold 4 keys in memory.

what if you have a aftermarket computer like aem or something? otherwise im in deep sht

if you have an aftermarket ECU the immo will be disabled as it sin the ECU

yep. ecu man is correct.