That's about right. Figure out if you're logging good data first, then go from there. I hate to say it, but just moving the air filters may not do anything as far as your AFRs go. That's more a function of the size of the MAF housing. Maybe a tune can scale it correctly. Even then, if airflow through the MAF housing is very turbulent, it still may be very inconsistent and hard to tune for. There's more to intake design than welding a MAF tube up and slapping on a filter. Where the bends are and the radii of them are very important to airflow, and it's not likely that ebay parts makers are doing anything besides slapping a tube and filter together. I'd bet good money that you would see more power, lower IATs and more consistent performance from a stock airbox on the dyno than an ebay intake. Or cut the MAF tubes off your stock airboxes and DIY up a CAI like others here have done.
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2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent
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