Mercury Racing 525efi Ecm555 computer
 

$1000. Perfect used Ecm. Removed from my 2006 525efi. Has 400-440 hours, stock tune. I had this as a back up Ecm since they are known to fail when IAC’s go bad. Never wanted to miss a weekend so kept as back up. Sold boat. Cost $1800 new plus reflash tune from merc when u buy new.
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