Idle bounced up and down from 900-3k
 

As the title says, i am having this idle problem. The idle Idle bounces up and down from 900-3k and while driving the car will stall when the clutch is in. I dont have an air pump but there is a blocking plate over the hole. Maybe it has come loose? Idk

Any suggestions as to what may be causing this?

I dont a CAT and my sparkplugs and wires have been replaced. The engine is also brand new.

Same thing happened to me. It most likey came loose. Just plug the hole. Pluged mine after I found it and idle better then when I had my stock intake.