It’s my opinion, having an UIM will give you the best results when combined with the LIM. I never ran the LIM by itself. So, I really cannot answer your question accurately. I installed a CAI with the Tigerlily 60mm BBTB, NGM UIM, NGM ported LIM all at the same time. Maybe someone here can shine some light on your question.
I had ran my NGM LIM alone with the stock UIM and honestly you do not notice much of a difference. I believe it was originally meant to help when running at least a stage IV but without anything up top it's relativity pointless to run alone. Still a nice addition if you have any future plans for an upper intake in the future. I paid $110 shipped for mine so grabbed it without hesitation anyway lol
Would you do 350 shipped? Also roughly where are you located? If your close to me I would prefer to pick it up in person to save a couple bucks on shipping and to make sure it doesn't get lost in the mail.