TUNING THE NISSAN RB25DET (R34)

It was great to see Si’s R34 GTT Auto back on the dyno.. Turbo had been upgraded from the factory stock unit to a GReddy 18G so it was back on the dyno for some fine tuning. Though boost on this occasion would be kept to a minimum due to no gearbox oil cooler and with the new turbo it was soon evident after intial tuning that this was gonna be making some nice early torque.

May be in the future this will sport a manual box but due to the factory box & torque convertor and also no gearbox oil cooling tuning was very conservative on this lovely GTT. If this was to be tuned with a manual box then this R34 GTT NEO would easily see around 380/400hp mark and similar torque. The Auto box really does rob these nice engines of wheel horse power

Who knows, perhaps a modification for the future 🙂

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