is msd rpm control accurate?
Re: How accurate are the MSD RPM Chips. PostSat Oct 03, 2009 1:06 pm. Funny you guys mention this..... I bought a 7al3 at the beginning of the year. After I hooked it all up I went throught all the rpm switches and put the test 3000 chip in it and went right to 3000 on all 4-5 rpms ports.