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Wanting to know, if I should keep the stock 33 Gtr turbos or upgrade to 34gtr turbos, what's the output for both stock turbos, I've been told the 33 turbos are good for 17-18 psi around 380-400hp although I wouldn't run that much all time, sweet spot so called. And I also heard 34 Gtr turbos power output around 480-500 with supporting mods of course. I have light mods probs to support 350-400, although will want more eventually down the track of course haha.

Edited by Turbo tommy

Garrett 707160-9 , why go to all that trouble with bush bearing turbos or ones with ceramic turbines .

PITA doing twins on RB26s so worth the effort to have something usefull and reliable even if it costs a bit more .

You'd hate to have to do it twice , cheers A .

33 Gtr turbos are steel wheel, and 34 are ceramic correct of wrong.whats the spool range with the t517zs?

No they aren't.

They are exactly as stated, both ceramic and both essentially the same thing.

t517s are also rubbish - have a search, plenty of info around about your questions.

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