I have a b16a3 its running pretty good but when its hot when im coasting or let off the gas in gear it kinda pops, also running on only headers no cat exhaust wtc temporarily. am i running lean or rich? or not enough enough back n e ways a guy has a brand new APEXi SAFC I and he needs any kind of money he can get asap and he will sell it to me for 50 bux? What benifits could i gain for using a safc on a stock jdm motor with aftermarket headers and intake. will add more bolt ons soon.