What's your opinion on an air fuel controller for your 4th gen max. I know it's a pretty good accessory if you are boosting, but if you are NA what are the pros and cons? Worth the money? Save gas? More HP for more efficient system?

 

I've never seen an air fuel chart for a stock maxima, so I comment specifically on these cars, however you CAN pick up quite a bit of HP tuning the stock air/fuel ratio. So it's worth a shot.