I HAVE A 10 REG WRX taken in p/x the engine is knocking when warm what is the most cost effective thing to do, rebuild with my own mechanic good but not much Subaru knowledge, specialist like scooby clinic what would a rough cost be, tune the engine at rebuild to add value to the end result?
If we rebuild it ourselves what are the main pitfalls. cheers

 

If its a MY10 WRX 2.5L Hatch then a good place to start would be here

https://www.scoobynet.com/scoobynet-...-failures.html