Hello, I'm new here and to cars. I have installed upper intercooler piping with a recirculated TiAL QR bov. To my understanding It should not increase power noticeably at all. However it feels like my boost is 10x stronger and just way too powerful for itself. I have basic bolt ons, and electronic boost gauge which i didnt touch and also I'm pretty sure my 2 step isnt correctly functioning at its stock rpms. Any help would be amazing, thanks!

 

Could be over boosting due to it breathing a bit better. You need a pro tune as your car won't adjust to the mods itself

 

You don't need a pro tune for an UICP. Also, your stock MAF does have a bit of leeway to compensate for things like altitude...etc. Is it actually over boosting or does it just feel snappier.

 

Previous BOV could have been leaking. You could have had a boost leak some where else that you fixed without knowing about it.

 

Yeah I was going to say probably sealed a boost leak

 

Ah didn't know that! Still a noob from the Subaru world I guess