Ive used recleaned/oiled cone filters for years on my previous MAF'd motor *Nissan Almera GTi without issue. Warm soapy water in a bucket, dunk the filter and clean, shake well once happy all dirt is removed and allow filter to dry naturally - light mist of air filter oil/spray and reuse filter. At the very worst, a clean of the MAF sensor a few hundred miles later to keep the engine running sweat is all you'll need.
David