You need to have something to divert the air down through the intercooler and under the car... even if you didn't have a tmic,
you still need the air to be diverted under the car. If you have no splitter the air just hits the firewall and creates a high pressure
zone, meaning the air coming through the radiator at the front of the car, can't flow nicely ...and I bet if you hit the track it would
cause over heating. Happened to me... no tmic... took splitter out... caused temp issues.