It`s true that the stock FPR is a very high restriction when you add a forced induction to your impreza, I have been folowing the SCC impreza project, and such a very good idea to remove the stock FPR with an off fitting regulator, a time ago I saw this part in JUNUSA.com made for nisan`s, I wasn`t sure if this was going to work on my car, I only thought that Unisia jec`s in Japan made the fuel system part for nisan and also for our imprezas, well thanks to Shiv I know they work, but here the question is for which nisan model?, according to( http://www.junusa.com/parts/engineaux/regulator_off_fitting.htm )they are two of them for nisan`s. I think will be the larger one, I really don`t know.. But friends one moire question, Shiv wrote at SCC that you may ask for the Weapon R FPR with this off fitting, but I need to know one web source that could offer me the right one for my impreza, betewen this two nisan jun models that you can find in the market....
Any one?