Boost

i was wondering how much boost a stock ej20 can handle before blowing up and what the stock boost is on an ej20

It all depends on your fuel... all you need is good spark, good fuel and as much boost as you like... A stock EJ20 can hold about 22PSi without blowing... keep in mind this is not daily driven 22psi... Ive seen built ej20s running 38 to 45 PSI so it really matters how much money you are wanting to spend on you car... I believe a stock WRX runs about 10 PSI... Dont quote me on this though this is off the top of my head

Thanks for the help, i just put a boost gauge in today and at wide open throttle through 1st and 2nd boost is at 10. 3rd 4th and 5th though boost is at 12psi.

The stock boost on the WRX peaks at 13.2 psi, this is at about 4800 rpm, if you're only getting around 12psi you're not getting your revs high enough to see it peak.

no i am but i just learned from the guy who gave me the guage that it is low by about 1 psi

hey dude what brand is ur gauge?

i have an autometer ultra light series gauge

oh ok i thought u had a spitfire gauge i dunno if its true but my friend told me that it was inacurate