94 Grand Marquis Air intake

Hi all. I'm thinking on buying an air intake for my car. My goal is to just get better acceleration. I'm not modifing my exhaust (at least for now). I'm also thinking about buying a performance chip. My questions are: Is it really important to connect the Air Cleaner Temp sensor (ACT i believe is called) and the MAF sensor to the new air intake system? because I have been reading that I can get a check engine light if I don't. I read that it is possible to still get the check engine light even if I have them connected to it. Is this true?

Does anyone have tried any performance chip? Do I see a big difference by installing one of them? I'm looking at the ones from Next Level Performance.

Finally has anyone tried that Turbonator adapter that goes inside your intake hose? Any suggestions or advice will be greatly appreciated. Thank you in advance.