95 sohc revs between shifts

so ive had my 95 on the road for a few days and now i noticed when i push the clutch down the rpms climb a little befor they will drop (it takes around 10 seconds for the rpms to drop:confused:) i do have a ses light on but the only code is for the egr that has been removed



also this is with the mtx tb on havent swped over yet due to this issue