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hey i have a r32gtst pretty much stock except it has 3 1/2" pipe.. b.o.v .. bleed valve..standard airbox.. nd standard intercooler.. i have been running it on 15 psi for the last 6 months and had not troubles other then replaced the clutch .. and i dont go easy on the throttle either. :banana: ... and it seems to be loving it :D .. no pinging,spiking ect.. so what is a safe setting to set boost at on a stock blacktop rb20 that is a daily driver...

define safe...

higher boost will just lower the life of the engine...

so technically you could run 20psi if you wanted but the engine wont last all that long...

when i had my 31 GTSX with a black tp rb20 i ran a stock S2 R33 turbo and a Apexi SAFC, 3" exhaust, FMIC, 440cc injectors and she ran 14psi all day every day for 3 years with no troubles...

thing to remember is the stock turbos are not doing much past 12-13psi, just pushing hot air as they run out of puff...

i should mention that the reason my GTSX had a black top in it was because i blew the arse out of the red top that was originally in there...

the vac hose came off the wastegate mid skid and she went super sonic and BANG...

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