Hey Don,
I was reading you post pinned on the top for what spark plugs to use in a 1999 225 EFI and I ordered the Champion QL77CC plugs. My question is when I got the boat the tech that rebuilt the engine put NGK spark plugs in it. Is it Ok to replace the NGK's with the champions that you suggested or will I have to do any kind of re sink and link or any thing like that since they are different brand of plug . In other words is there anything else I need to do besides just changing the plugs out? Thanks in advance
Keith