Hi guys,

I know this is a noob question, but I have been searching through multiple forums, directories, etc and cant seem to find the answer to this question.

When I purchased my JDM D15B, the seller gave me a P28 with the setup, little did I know that this was an automatic ecu - - my full mistake in trusting and not knowing at that point.

So : the part # on the ecu is - 37820-p28-c51 is the "c51" only to identify that it is from an automatic , as it differs from the codes I have been able to find on any other P28.

Any help is truly appreciated.