18% STFT WITH NO VACCUM LEAK
 

Hey guys, so I'm currently in the process of doing remote tuning with my tuner

I just recently turbo charged my car and completely rebuilt my engine with rods, Pistons and valve train to suit the turbo application

I can't seem to find out why my car is giving me 18%STFT AT idle :-S
Manifold absolute pressure is .48 BAR at idle, which my tuner says is still high.

He is suggesting a vacuum leak but I did a smoke pressurized test and did t find any leaks.

What else can cause these symptoms?