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hey guys i got a stock r33 gtst other then cooler and air intake. whats the max boost i should be putting through it. i have a boost controller which reads off % does this mean it reads off % of the stock psi? if so what is the stock psi of a gtst ? thanks

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ahh k thanks heaps mate, yeh i heard stock psi was 8, one other thing, sorry for stupid questions btw, my boost controller reads in % does this mean its a % of the stock psi ? so if i set it to 20% its 8 psi + (20% of 8) ? so id be running at 9.6 psi?

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My stock gauge reads roughly 5psi low boost and 7psi hi boost.

Around 12psi the ecu should throw r&r, many people have run the stock turbo at many different settings, personally I'd keep it around 10-12psi.

Some people run 14psi+ with no troubles, all depends how you car was treated in a past life and how lucky you are, factor in how long you want the stock turbo to last and you'll come up with your own figure.

http://nissanskyline.6te.net/tuning_GTS25T.htm

Edited by nicr4wks
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