Alright i have got a question for all you guys who done this before. How much actual gain do I get from taking my lid off of my airbox. Is it worth it? Would appreciate any input at all guys, even if its just an opinion or fact! Thanks for all the help.

 

Most of the time, its not noticable. Try it and see if it helps, if not, leave it on cause it keeps your filter alot cleaner.