VLRB20:
Im assuming rb20 computer hasnt been remapped etc.
1. Yes they do have rev limiters. On mine its 7300-7500 revs.
2. Speed limit is alo rectriced to 180km/h on standard rb20's
3. Its wire #53 on the ECU harness to disable the 180 kph speed cut. It also disables the hicas. Whihc most guys disable anywayz.
4. With stock internals,fmic and exhaust(im assuming trubo bacj exhaust here) i would be running only 1bar max.. even that. Try and get it dynoed tuned b4 trying this thou. 40 bux compared to a new engine/turbo
5. Ive seen my mates on with same mods get 134rkw (dismell numbers i know)on 1bar boost. Soory man but its a sad fact of life with the rb20