'7427 will run $0E , $0D , $31 and I believe others, I run $0E in my '93 454 with the blower , $0E in my '94 with the 502 and $0D in my S10 Blazer SBC . Never experimented with $31 though.

I think it ended up being a latency setting in the com port , switched it like is described on Moates site and all seems good as of now.

Thanks for all of the help and advice . Hope I can contribute some too.

TOM