im not sure if that was the best investment for you..

most of the guys in my RX7club who even bother to run upgraded ignitions run Jacobs' Rotary propack. you got rid of your stock ignitors so you will of course have tach problems.

MSD is hillbilly brand and isnt exactly the best choice of upgrade for the rotary ignition. anyhow, you really shouldnt waste your money on upgrading the ignition untill you have upgraded EVERYthing else on your car... the ignition upgrade yeilds just as much power gain as a body kit or stickers.

these are just the impressions my friends have had after upgrading their cars, and were disappointed in the gains. then they start complaining that they wish they had spend their money on something else.