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Well my turbo had a .66 front wheel and 1.05 rear whel... apparently was rated at around 800hp. On my rb25 was on full song at 5k... was making boost from 3000rpm. This was the non ball bearing version. When tune time came on 24psi it made 345rwhp. At a dyno comp with 20-21psi and some faults it made 420rwhp on pump. No additives like octane booster either.

Over all i thought it was a good turbo. If you plan to use it on a rb25 make sure you use some cams in it and boost it up to around 30psi. Then again every tuner and engine builder is different.

Harun

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