I have a 540 Dart Block with 315 AFR heads with a 500 efi intake. It has the MEFI 4b comp I believe, CJ Motorsports put it together with Baker Engineering did the programing. It was done in Michigan. After running here late last year it seemed to have some back soot on the transom and it felt like it could have a bit more on the top end as far as RPMs. Only was turning about 4900 and felt like it has more power. Either way I want it fine tuned to be sure it is being most efficient with the props I am running. I cannot seem to find anyone that can program the MEFI4b in the area. Please let me know if anyone knows anyone. I plan to have bungs put into the exhaust tail pipes. I was going to send them to CMI and have them installed but wanted to be sure I have the right thing installed. Thanks in advance.

Give Ben, at Precision Power Offshore a call.. it is his busy time of year, but I think he can do the Mefi4..
616-844-1000. He is in Spring Lake Michigan.

Hoping for someone that can run the boat locally near my area.