Is that a blow through MAF or draw type. Didn't see that, Where is it mounted, in the engine or in the fenderwell. Have you tried clocking the MAF 45 degrees as sometimes the air turbulence messes with it.
Adding the pp shouldn't have caused any issues. Did you extend the maf harness, if so check your splices or soilder joints and make sure the connector is pushed in tight.
Is it a na or boosted calibrated meter? I prefer na on all combos as it allows me to do what I want with the fuel in the tune.
I got it figured out. Aparantly I over tightened the boot that the mass air goes into to the point it bunched the rubber up and caused an air leak. I finally got it straightened out and running like a champ.
Thank you for posting your results. Many of us will never see an Anderson power pipe, so the information about possible duct problems is useful to help us troubleshoot future problems.