bclounch

So just got done putting in an LQ4 this past week. Car runs, but it's pig rich (10 MPG max), surges, idles rough, kr up to 9 at light throtle, and will stall occasionally. I just now noticed on my scanner that my MAP sensor is constantly reading 3.1 inHG; from idle to throtle. The shop put a "start-up" tune on it to break in the motor before it goes on the rollers. Would a bad MAP sensor cause all these issues? Or could it just be a crap tune?

Its also throwing a
P0101- Mass or Volume Air Flow Circuit Range/ Performance Problem
P0507- Idle Control System RPM higher than expected

Thanks