acuratsxms

hey guys, what's up. question.... what is the difference in the 04 and the 05 automatic ecu's. can you just plug in and out the ecu's or does the imobilizer only work for one ecu.....
Thanks for the help amigo's

xizor

ECU and immobilizer have to be matched I believe

curls

I'm guessing the ECU's are different as Hondata has only been ably to crack the 2004's but not the 2005's.

acuratsxms

i know hondata requires the imoblizer when they reflash it and maybee theyonly need the imoblizer when they reflash it... but lets say i dont want that... i literaly want to pull the 05 out and put the 04 in...would it work?

NJTSXMan

The immobilizer, ECU, and (transponder chip inside the key) have to match for it to work.

I am an owner of the 05 TSX 5AT, and I purchased an 04 ECU, Immobilizer, and Key all from the same wrecked 04 5AT TSX. I got it reflashed and it works perfectly.

Obviously, the key from the 04 TSX doesn't fit my car, but thanks to Moda_way, I did the honda accord keyfob in which the transponder chip inside the 04 key was utilized along with a cut copy of my 05 key.

I just swapped everything out and it works with no problems.

moda_way

When I saw that post, I was about to tell your story NJTSXMan.

NJTSXMan

lol.. yea.. had to give props to you for the awesome mod job and JTSO for the encouragement.

rmpage

I'm still extremely curious what differs between '04 and '05 MY though, especially since the '04 ECU seems to work well for you. Perhaps functionality is identical but Honda just changed their architecture on us, e.g. the ECU behaves the same way but its internal programming is completely different?