i'd like to do a real life test but haven't been able to get a fluke 289 (logging multimeter) at a price i'm willing to spend. iirc the crane ignition tester i have will drive an ignition to over 19k if the ignition will go that far. iirc no ignition i've tested pulled more than 8 amps with most being in the 7 amp range. of all the ignitions i've tested the crane HI-8 was the meanest but i've never tested anything like the MSD-8. i don't think any MSD 7 i've tested pulled anywhere near the 12 amps they claim at 12k RPM but there are a lot of variables