anyone had a problem like this, what is happening is at 7000rpm my rev limiter is kicking in , i have a msd digital 6 + w/ msd hei streetfire distributer, the distributer is modified per msd directions and control module was removed, i have talked to msd tech and they told me to route all my wires to msd box away from other wires - did'nt help then told me to close the gap on my plugs from 35 to 30 - did'nt help then said to run ground wire from head to head and then to chassis -- did'nt help ive set the rev limiter to 9000 rpm to see if something could be screwed up with it , that made no differance , then got another msd box -- still did'nt help what else could be causing this? the msd box is mounted close to the battery on inner fender , all wires are ran away from everything else , i'm using ngk v-groove racing plugs ,only thing ive not tried is changing coil and cap and rotor , any help or suggestions would be appreciated.