How efficient is an uprated SMIC?
Test conditions:
-BoostFactory SMIC (due to similar size and construction, the results may be the same for Tyrolsport UGSMIC, Kraut-Burner Performance SMIC and Eurojet Performance SMIC);
-Turbo to fender charge pipe insulated to avoid heat soak from the red-hot exhaust below;
-SMIC insulated from engine bay;
-THS non-restrictive pancake pipe;
-Vents cut in the fender liner;
-Forge hose from SMIC to throttle body insulated.
Meter: intake air temp sensor values read from the OBD2 with a dongle and Torque Pro.
Driving conditions: >1 bar runs with speedy road drives in between.
Results:
Air temp (°C) ---- Intake air temp (°C)
0 ------------------------ 15
5.5 ---------------------- 18
8,5 ---------------------- 22
10,5 --------------------- 24
12 ----------------------- 24
13 ----------------------- 30
14,5 --------------------- 30
17,5 --------------------- 32
19,5 --------------------- 39
21,5 --------------------- 42
27,5 --------------------- 49
32,5 --------------------- 50
37 ----------------------- 54
38 ----------------------- 58
Assuming a temp of 120°C at turbo outlet, which is average for >1 bar turbos with moderate efficiency, but the real temps in the hot engine bay of the 1.8T with small and inefficient K03 and K04 rotors may be even higher,
BoostFactory SMIC efficiency should be over 75% at high temps and around 85% at lower air temps, which is very good bordering on exceptionally good. "Suitcase" 600x300x60mm core FMICs on Nissan R32 may achieve about 88% and cool the intake air 10°C above atmospheric temps.
