I have an s13 with redtop motor. It runs pretty well. Stock boost 7psi, stock side mount and greddy bov. It idles fine at 800rpm, doesnt stall, but it feels like it lags in the lower rpms and past 4500rpm. i plan on turning up the boost but i need to get a wideband first. I wired up my OBD1 harness to the ecu and pulled the data. I noticed i have no 02 sensor voltage? maybe i wired it wrong. MAF volts at 1.7v. TPS .35 at idle and 4volts at ***. STFT at 100% and LTFT at 128% I have a fpr set at 43.5 psi with vacuum line disconnected. Also anyone know what the stock turbo A/R is? Mine says .80 A/R on it.