Twin Scroll Automatic Tuning

[Nicos]

Good morning everyone,

Firstly let me start by apologising for posting here if this is the wrong place to do so. 

I have just bought a 2005 JDM Legacy GT Spec B. 

Twin scroll automatic. 

I'm sure that the questions I'm about to ask have already been answered/posted many times over. But I'm not very good at searching on here as yet.

My question or questions are:

I believe my car has around 260ps? I would like if it's possible to get it up to around 350ps?

I'm hoping that's achievable, while still maintaining reliability as an everyday driver?

If so, what parts would I need?

I live in Farnborough, Hampshire, and would be willing to travel anywhere for a decent tuning company to have the work done. 

 

Can anyone recommend someone?

I would prefer to be able to just book it in for the required work, drive in, have work done, then drive out with a much lighter wallet, but with a massive smiley face all the way home. 

 

Any advice or help would be very much appreciated.