Installed Anderson Powerpipe on my 1999 Procharged GT. The result is codes P0172 and P0175, banks 1 and 2 running rich. Took the MAF off and gave it a good cleaning. Reinstalled, cleared original codes, went for another test drive and got the same codes again. Thinking my MAF may have died while in the parts box with all my intercooler pipes and tools. On close inspection, the MAF seems to have been repaired at some point with some sort or glue of epoxy. Any thoughts?