How to delete avls system

What is your question?

I have a 2007 Subaru 2.5i Impreza with and 2004 Impreza engine and I’m having a problem because the 2004 doesn’t have avls system so it runs and drives good but when you reach 4000rpms that’s when it starts hitting the rev limiter

What makes this problem better or worse?

Nothing it stayes the same

How long has your 2007 Subaru Impreza had this problem?

Since I swapped engines