I did get 8rwhp from tuning my S-AFC. when I redid my heads I went from 10.5-10.7 compression and got some power with exhaust/intake and ECU(15 deg timing) I did 185 rwhp(on a 100 degree day) tuning the S-AFC got me 192 with a lightened flywheel I ported my heads(and fixed the bad valves/seals) and got 195 and retuned the S-AFC to 203 on a 90 degree day
My cats have been coughing up black crap on both these runs