ECM controlled spark timing imo offers more benefit than ecm controlled fuel delivery. I believe Howell does not alter timing because it makes their job much easier. I have looked at different...

This is good. Howell used to be good about trying to provide support if you got completely stuck. If it turns out a Howell supplied component is bad you may be able to obtain replacement parts...

Welcome to the forum.

$42 is the correct code for a true Howell conversion. If the swap was done using junkyard parts you should locate the ecm and get the part number or service number to ensure...