|Many cars run the single intake with the large filters or the dual intake (Selin elbows plus bracket) with the large filters without issue.
Do you have the stock air defector in place?
I am personally running the following combinations:
1) Single intake with large filter (NA)
2) Dual intake with Selin Elbows and bracket (3 sets)
3) Dual intake with Selin with Ash Planars and 370 filters (and homemade bracket to keep the filters from bouncing around like a pair of big ole ***ties :-)
All cars have their splash shields and air deflectors in place. 4 out of five tuned by SZ. No issues.
ConVerTT - 93 Hi Compression TT Convertible (black)
XtraVerTT - 93 Hi Compression TT Convertible (glacier white)
SlickTTop - 96 OBD1 TT Slicktop (black)
Old Yeller - 90 Slicktop NA (PGY)
RedZed - 90 "factory" 2+0 TT
EmoZed - 89 RHD for parts - RIP
And their hot Asian Cousin - 01 Acura NSX NA