sylencce

Anyone know what the stock turbo in a 2004 WRX holds for max psi?

Thanks

mattsn0w

iTrader: (23)

The stock turbo is only efficient up to about 18psi I think? anything higher then that and the seals will go pretty quickly.

I ran about 20K miles at 15-16psi, and another 32K+ miles at 18psi and my turbo is now leaking oil from the inner seals. I am actually replacing it this weekend.

mattsn0w

iTrader: (23)

oh yes, this was of course with a professionally tuned setup. Cobb AP v1 + MBC + TBE

richy_21

yea 18psi after that its just blowing hot air.

mattsn0w

iTrader: (23)

little more info...

miles 0-30K - stock ecu tuning.
miles 30K-50K - Ecutek reflash(gruppe-s) 15/16psi
miles 50K-82K(now) - Cobb AP(EQ Tuning) 17.9/18psi

bmoney13

I've seen one at 20psi, but that is way beyond the efficient range of our small turbos.

testes1010

wrong.... I generally tune the stocker at 18.5psi, a couple I have tuned at ~20psi(only w/ aftermarket TMIC).

if you can read a compressor map you'll see that the turbo is efficient well over 2.5 Bar(Absolute) = 1.5Bar(Gauge) = 21psi(gauge).

bmoney13

How long does the turbo last at 21 psi???