Hi guys, I'm having my 11 wrx tuned shortly and just wanted to know what psi would be fairly safe on stock internals? Got TBE, PW intercooler, fuel pump, CAI and also the Grimmspeeed 3 port solenoid.

I usually let the tuner decide this.....key words is Safe tune... That is all

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race tape y pipe running .05 bar till spares turn up.

PSI is simply that pressure. It has a relationship to flow rate. Every turbo has a different flow, hence, pressure of one turbo versus another has no relation to the volume of air being forced into the cylinder.

Ask tuner for safe tune, he, his skills and turbo will determine when it knocks and what pressure is safe for stock internals.

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[COLOR=Black]Liberty GT Spec B tuned 240 HP & 372 Nm at the hubs.[/COLOR] "Instead of banning high performance cars - ban low performance drivers"

stock is 14.7 psi, MMS do 16 psi to maintain warranty with city subaru. most shop think 18 to 19 psi is safe, some head room for bad patch of fuel causing knocking. Im refering to VF48/52.

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MY08 STI 422whp at 1.5bar on E85, built by Diversion Garage, assembled and tuned by EvoR

Update from new owner: 375whp at 1.4bar on 98, at Tokyo Motorsport

25psi

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The one perkent...

Currently I am running 20psi on my stock setup, except for TBE and ebc. No probs, but upgrading my TMIC and air box real soon though.

using the Perth-WRX mobile app

A big factor is also how you treat your car eg warm it up maintenance will also play a role in how long the car lasts

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363hp and 499.5nm
gtps03 turbo on 98ron BP
2012 Wrc Blue Wrx Sti R spec (ARGH SPEC)

Thanks guys, got a great tuner lined up so should be OK but yes I have heard around 16 and no higher, just wanted to see what others were running...

Reading is such a lost art ...

Again, the variables of turbos aren't easy to just give a 'insert PSI here' ...

Cams, head design, piston type, piston construction, type of TMIC, intake setup, resultant air charge temp, etc etc etc.

Once again the newest questioning members seem to be the ones giving answers.

I'm thinking of doing medicine ... Can I give my opinion on heart surgery?

Completely safe ... Remove turbo and run NA.

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[COLOR=Black]Liberty GT Spec B tuned 240 HP & 372 Nm at the hubs.[/COLOR] "Instead of banning high performance cars - ban low performance drivers"

As I said in my first post the tuner decides but if you want numbers I am running 22-23psi on a stock Wrx 205 unopened motor my tuner was comfortable to put this much boost with all supporting mods. I do however am not afraid of blowing my motor up so we will keep putting the boost in till she dies or I get tired and replace motor with the new build currently in bits till assembled.

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race tape y pipe running .05 bar till spares turn up.