I hope hindi OT ang question ko...

Will an open-type aftermarket air filter (K&N) bring noticeable benefits to my LPG system? Medyo rough idling kasi ako ngayon (idle is right, about 900rpm, pero sometimes it hiccups down to 600rpm momentarily). Namatayan na rin ako during full stops, while running on LPG. Hopefully retuning will solve it, but will upgrading my air filter to open-type be recommended?

Short trips lang ako (8kms home-office), in pure city driving (stop-go traffic). Ok pala idling ko with gasoline.