well i put a new o2 sensor in and the p0131 code went away but im still getting a p0171 code appearing alot and my ltft is at 16.4 with stock pcm and im not noticing a vaccum leak at all but my fuel injectors are very loud so im thinking that its clogged and making my ltft raise up to beable to push the fuel through the injectors and throwing the p0171 lean code off could this be the problem or something else and when i take my open cone off the maf in park it goes from 14.2 to -7.8 any solutions or advice would be greatly appreciated