Turbo Options for Upgrade

95Blitz

Well-Known Member
View attachment 38835

zfr6758, 93octane,~28ish peak psi, 100+ temps with a fairly conservative boost ramp and timing. I'm really happy with this turbo and personally don't need anything more. If I were to add to it, it would be a meth setup and push the limits with this still on 93. I could envision 430-450whp for much of the powerband.
Hey Prime, is this graph before the cams and head upgrade?
 

BSinvestments

Active Member
I just removed my z54 and went to a g25-550. I mostly autocross but liked to be able to turn it up and make some power the rest of the time. The z54 power wasn’t as linear as I would have liked. With boost coming in hard after 4000 rpm. I put the zzp turbo swap kit that retained the air to water intercooler in the manifold. I’d like to think we made about 400 hp but never dynoed it from the retune with the cams.
I just finished installing the g25 yesterday. I’ll update once finished.
 

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