Are there any gains running RS4 IC's with K03 turbos?.......Is it worth it?
#4
better heatsoak resistance and lower delta IAT at WOT.
i wouldn't call them cheap though and gains are more substantial with turbos bigger than ko3. but hey! i got FMIC with ko3's and loved it. same 1/4 times in 100 deg F, 90% humidity as 50 deg F. legit.