Hello I need help.

What company programs mefi1 ECM ?


My last program make keitheickert.
I have post him, but he don't have time for me.
I take to many time for the last support.
It was 2011 and now I like to program something diffrend.

What company can do this.
Change the spark advance table on my HEX9334 mefi1 ECM.

Thank for all help.

i use mefiburn.com also called obd diagnostics .real good guy to deal with

Precision Marine in Louisiana has a good reputation. Also mefituning.com ...don't know much about this guy, but he seemed pretty sharp when I talked to him.

Scott from Keitheickert have time for me and help me again. Thank Scott for your Help !!

Bob from MEFIBurn can help. If you are savvy you could get the software and work on the timing table yourself. MEFI 1 is one of the easier ECMs to play with simply because it lacks the complexity and fidelity of the later MEFI units.

www,mefituning.com

What do you think about this ??
Is it normal ??

Where is the problem ?

This old ECM shows the real total advance in Rinda. The 29.53* at WOT are real with light gun tool.
The 33* befor 3200RPM are real too.

This is a HP500 and Rinda shows the advance. 28 + 8 = 36

Are your engines stock????? If yes, then just run a stock mercruiser ecm tune or one that is slightly modified.

20 years stock.
4x rebuild with new engine blocks and allways stock. Only thumber power exhausts.

I have stock ecm Hex 9550 and modifed ecm hex 9334 from keitheickert. Both did the same.
Is this normal ? Ore are something else wrong on my engines ?