u/Tsugeta7

S4 T2 issues at idle when cold
▲ 53 r/RX7

S4 T2 issues at idle when cold

I installed a GReddy FMIC over the winter and got the car running. When cold, idle is low at about 500rpm, and it stalls if I don't hold the idle at 1000. It's also very smokey. Smoke colour looks mostly white but has a slight blue tinge to it. Smells more like fuel than oil though.

I tested my TPS, and it sits at 1k ohms with the throttle closed and has a steady increase to 5k as I open the throttle. Engine was freshly built last year and has around 6000km (3700 miles)

When it's warm, it idles fine at 13.5 AFR and smoke clears up. Cruising is 14.7, and boosting to 7psi is 11.5-12AFR. no noticable drivability issues and still pulls hard.

Any help would be greatly appreciated

u/Tsugeta7 — 1 day ago