Shailan

iTrader: (1)

sorry for being a bit thick. I have a 2005 wrx, does it have a 2 port as standard?

If upgrading to a 3 port, what are the benefits, i.e. will I see more power?

The car already has
up pipe, down pipe, walbro pump, panel filter, td05 trubo, 550 injectors and is running 330bhp

thanks in advance

Tidgy

3 port allows more boost, will need apping to make any difference though

360ste

iTrader: (1)

The three port solenoid gives better control than the standard two port solenoid so as previously said allowing more boost as it can be adjusted to a finer tolerence. But you will need a re-map.

FB Tuning

iTrader: (30)

Will definately need the Wastegate Duty Cycle tables reconfiguring, when changing the boost solenoid

Shailan

iTrader: (1)

I read more while posting this. worhtwhile read for anyone

How Subaru's Factory Boost Control System Works v1[1] 01