timing
 

when i up the boost on my silvia it hesitates and won't pull past around 5.5rpm, i think this may be due to the timing being advanced?? i don't have a timing gun so i was just gonna give the dizzy a little tweek? but i was wondering if anyone knows which way to turn it to lower the timing back to around 13-15 (thats if it is advanced......):)

Turn it to the left to retard it.