How did you reset your ECU? Resetting with an OBD shouldn't have messed with the ECU like that. You would need an access port. Where you revving pretty high I traffic? Did limp mode kick in? If you hit 260 like you said, then your revs would have been limited to 3500rpm.
Also, I think Nissan dealer uses ester oil. That's what my dealer puts in my car.
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[09][MB][6-Spd MT][Touring][Stillen Gen III][K&N][Borla CBE][Evo-R]
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