I really want to run 350bhp. The reason i was looking for a JDM 03 was due to this figure been pretty easy to reach and been almost lag free. I got a really nice 05 UK a few weeks ago running above standard bhp but find myself still wanting 350bhp.

Is there anyone who offers a twin scroll conversion for an 05 STi UK? I want the bhp but as little lag as possible (me and the rest of the world). Is it worth doing? My car is running a TSL motorsport 333 kit, power is good, lag is very little. TSL do offer a 353 package but i am not sure if this will be a bit lag happy. Anyone running the 353 kit?

Any info regarding this would be great guys.

 

This will not be cheap to do restrospectively, as you need all the pipework & sump etc. BUT.... with the advancements currently being made with specialists like Litchfield Imports, in what is now available power wise on the standard fit bolt on front, it is now more viable for bigger power requirements if wanted.