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Yep, as Robin said, no point stretching beyond 4k rpm as there's more to be gained by changing up early. Don't be surprised if you stall it a few times taking off from rest - it needs a few revs. Once above 1500rpm the turbo starts spinning and it starts to fly. Basically, you want to keep it in the 1500 - 4000 band and you'll be fine!!!
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