hi there people.... could do with some good advice

just rebuilt my s2 erst

rebore 0.5 oversized mahle pistons
crank was polished new shells
stage 2 head
and a new stage 2 t3 from cr turbos

so basically ive got gotech engine managment and the engine is going back in the car next week.

im a bit confused on what to do next as its basically a brand new engine do i take it straight to the rollers (jamsport) and get it setup or do i run the engine in for a bit

im scared that if i take it up to them to get it remapped before running it in and they ragg it that it will blow straight away help please