My 1999 175 EFI (serial #0G944199) has been having issues since last year. It's been in the shop twice so far this year and I've spent about $1000 on it so far, only to find the problem is still there. The mechanic said the next step is going to be taking the ECU off and sending it in to be tested. He recommended sending it to CDI Electronics. He didn't know what it would cost to have that done. Any ideas on cost to have it tested? Thanks