Just got a dyno of my car (HR31 Coupe), its making 127rwkw. Its basically stock standard with a 3" split pulse dump, full exhaust, FMIC and splitfire coils.
Now its running very rich in the midrange (pretty normal for the redtop ECUs), down to dead on 10:1 at about 5000rpm. Goes back up to 11 ish up higher up and then back down to 10 again. You can see big holes in the power curve where it richens up when I compare it to the afr graph.
Now I dont plan to do much to this motor, probably a stock rb25 turbo when the standard one gives up the ghost but aside from that that is all. Now Im thinking a SAFC might be a good bandaid fix to this problem, lean it out to 12.5 through out the range should pick up ~20kw? in the middle where it richens up and smoothen out the power delivery. I know a full ECU would do a much better job, but at $1500+ installed and tuned for a decent ECU it seems like a waste of money considering my plans for the motor. I may as well put that money towards a better car with all the goodies already.
What are your thoughts, Boostworx quoted me $250 installed and tuned for a SAFC which seems like a cheap option.