Let me start by saying IV SEARCHED...i find threads about surge when cold...n/a setups surge...sputter under acceleration but not to my issue.

b16a stock internals, stock everything but spark plugs and injectors and fuel pump/ turbo, using well sealed up vacuum block with new lines running to all components, turboxs bov that iv added washers to thinking it was leaking, 7psi tuned/

two main issues is: first if i try to keep it at a set speed it shudders and either wants to accelerate or decelerate...feels like a misfire issue. Under acceleration its perfect and fast. Iv changed plugs twice.
Second is it has now (2 weeks now) started idle surging once is it warm and will stall sometimes. It stalled once while driving 40mph after i pushed the clutch in.

Im sure these issues have been talked about somewhere on the web but iv searched for a few days now and find issues close to mine but not the same.