i have an N/A and last time i went to the dyno i had intake and UP and my first run was 184.6 rwhp and 172.1 torque but i advanced it to 17 degrees and my numbers were 192.5 rwhp and 172.4 torque. Not a huge difference in torque but an 8 hp increase was nice. Ive kept it at 17 degrees for 5 months now and nothing has gone wrong.