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OBD2? A million dollars. Why? The chips that were used for the Preludes are not reprogramable and there is no source for new ones except possibly hunting down Honda Japan to give you blanks if they haven't coded them already. Here is where the million dollar bribe comes in...

For OBD2, you need to convert to OBDI and get a reprogram or Hondata, Zdyne, etc.
 

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Discussion Starter · #3 ·
I swear satan was selling a reprogramed gsr one a while back. He did it thorugh some place i swear it. Satan where are you?
 

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You cant reprogram a OBD2 Prelude ECU because of the immobilizer, but I beleive you can just use an OBD2 GSR ECU. Since you are reprogramming it, you can redo the fuel and timing curves to suite the H22.
 

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Yeah I have a Techtom P72 OBD2.....but you can't do that on a prelude ecu....you just can't.

I will be switching to Hondata soon enough anyways....OBDII P72 cost over $400US alone and are not re-writable, so it's kind of a waste of money now that there are more options out there.
 
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