Boost gauge t on newage
 

Hi iv searched and there seems to be 2 places people t into to get a boost reading but witch is the best one of the diverter valve or from line on the inlet think it's the fpr

best to not t off the FPR - should the connection ever leak you run the risk of losing fuel pressure which will quickly end your engine. At least if it's taken off the recirc valve line then if the line fails you'll still have a reasonably OK driving car. For what it's worth, the subaru guide on fitting the factory optional boost gauge says to use the recirc valve line.

Ok thanks mate recric valve it is