viewtopic.php?f=6&t=34980DIY parts translation info ^
Once you have the p/n you can check useage info across the models.
My brembo’s work great with the stock 2.5t Gt-b booster, are you upgrading or doing service replacement?
I researched it a little & post 104 sums it up, stock brakes may be a little more responsive albeit with a stiffer pedal feel.
http://legacygt.com/forums/showthread.p ... 077p7.htmlSo from research, some Subaru boosters have an integrated check valve, others have the valve integrated into the brake booster vac line/hose, visible as a slight hump & sleeve on the hose.
So you just need the hose for that model booster and then to make an airtight termination at the inlet mani end, either direct or via a stepped adapter preferably crimped.
But if I just hit my bookmarked opposed forces parts link, go to braking, master cylinder diagram:
http://opposedforces.com/parts/legacy/e ... tration_2/Choose the mc assy at #9...
http://opposedforces.com/parts/info/26401AG000/It’s common to 6mt Gt-b, WRX & STi, but the booster isn’t...
So follow the useage info link eg to a WRX or STi model and bingo, there’s various choices of the booster vac hose with the integrated check valve.
http://opposedforces.com/parts/impreza/ ... _cylinder/Given booster vac lines are very hard, a custom line & check valve might be the go pending fitment...
You’d probably go an 08+ Wrx hose as that & Postfl Gt share the same plastic inlet mani.
Since the OF info kinda craps out as regards the hose p/n’s I’d just do the exact same search’s on eg Partsouq...
However as the lib Gt mc is same as STi & the STi booster is used across every Impreza model, I fail to see the point of the exercise unless I’m missing something big
However for those following along iirc member hyrax upgraded his 2.5i, I’ll dig up the link...
https://www.google.com.au/search?biw=32 ... qt6zpuj3So& tuner ThrottleHappy aka kido, Matt, McMatt etc does a trick in the tune to increase idle or cruise vac to up the pedal somewhat