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We advanced my RB256 exhaust gear 1 degree on the dyno.... lost 64hp at the wheels, retarted it 1 picked up 22 over 0 degrees... There is too much to tell based on a dyno sheet.
From electric, to timing to overall condition of parts.
I used to drop fuel pressure at 15psi..... ended up being a oxidized wire to the fuel pump, redid the wiring and retuned for another 100WHP.
So what I am saying here is check everything out, from plumbing to pressure, to cleaning wiring terminations. It all matters
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