Take off the yellow "ign" wire from the starter relay to disable the starter so as to not run the batt down & no need for the starter noise distraction then have a helper hold the key to "start" & you under the hood & see if the ballast/coil/ECU are recieving fire. Assuming 4 terminal ballast/5 pin ECU. 2 pins of the ECU need fire in "start" as does the coil positive primary terminal. What is drift starting? I'm assuming that is push starting it with the key in "on" rather than in "start" which points to an ign2 (cranking) circuit open