Granatelli normally have good tested stuff. I'm sorry the fit (I'm guessing?) was bad! I hope you get it solved soon!
Their tune less MAF/CAI actually works and makes almost all the power a tuned one does... I wonder how much feel diff there is by still having the throttle delay etc. in the car/computer...?? Somebody with the CAI/MAF should buy a tuner and let us know power gain and drivability/fun gained... maybe subjective but would be fun/interesting to know
(PS. I'm not a fan of Granatellis in house dyno testing.... often VERY favorable numbers.... but they are sales people.... they all are....