RB25 ECU's are dookie. from what ive read on the aussie Forums if you boost more than Factory boost, the ECU will pull timing and Dump fuel to prevent detonation.
Mine feels the same way. I installed my Hyper Gear turbo on my RB and with boost @ .6 bar and felt slower, put my Stock turbo back on and felt "better".
but hey if you decide to sell that ECU let me know lol
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