Hey there all ! So I’ve received a Subaru wrx 2006 from my brother In law which is a ej25 so he never changed his oil and his motor got wrecked. He than swapped it with a jdm ej20 it was running and revs pass 4000 rpm at the time. Now it’s been sitting here for over 2 years, and now I’m taking over. So now I’m starting it up and car doesn’t rev pass 4000 rpm in neutral or driving normally help !! Please.