Hi Al,
Sorry for the delayed response its been a hectic travel week for work.
I've enclosed a link to MSD's web site for one of their adjustable rotors. In the technical tab there are the typical MSD installation instructions plus a technical bulletin explaining rotor phasing better than I ever could. See the section titled Phasing and Electronic Timing Controls. If you dig around on FI Tech's web site and find their installation instructions, they also have a good explanation of rotor phasing when controlling the advance curve with their system.
https://www.msdperformance.com/products/distributors/distributor_accessories/parts/84211The programmable advance curve and the overall rev limiter are the only features I'm currently using.
Something I forgot to mention. Most aftermarket hood tachometers will require the use of a tachometer adapter to function. (MSD 8920) My Autometer tachometer does not require a tachometer adapter.
https://www.msdperformance.com/products/accessories/tach_adapters/parts/8920I actually use my old computer (really old...) to communicate with the ignition box. It's the only machine I have left with a serial port. They make a USB to serial cable, I just never bought one.
Ha! My curly corded wall hanger has touch tone push buttons in the hand set! Hmmm, don't think it makes me modern by any stretch. I'd be happy to discuss over our land lines if you get to that point. Just PM me and we'll get together.
Hi Robert,
While I've done some research with FI Tech systems, I'm not sure how flexible they are with big cams. Long duration, tight lobe centerline camshafts (<112 degree centerline) generally reek havoc with off shelf EFI systems at idle. I might switch to one of their systems if I could get it to behave with my big cam without a lot of grief. I sure like the idea, but will not give up my big cam after working to tune the thing with the Holley/MSD combination. If you have big cam/FI Tech experience please share.