Turbo upgrade on my 89' 240sx with the sr20det??

Question

I'm thinking of upgrading my stock turbo to a Top mount"super series 50 turbo" link: http://www.ssautochrome.com/search.itml?icQueryTitle=SUPER+S13+%2F+S14+%2F+S15+SR20DET+TOP+MOUNT+TURBO+KIT
Should i get a bigger fuel pump and injectors? Is the 440c injectors ok or should i go with 550c injectors?
Any other upgrades i should get?

Answer 1

The modifications the sky is the limit be sure to use 550cc injectors and some more engine management waste gate control or stand alone ECM with Lap Top inter face. and reserve Dynometer time at the engine tunner.

Answer 2

I wouldn't touch an SSAutochrome turbo with a 24" torque wrench - they appear to have progressed past their infamous case of a turbo that had its compressor housing held together with epoxy and split in half, but they still have a reputation for poor quality. I'd go with a genuine Garrett, Master Power, or Turbonetics turbo rather than run the risk of using a cheap turbo from the People's Republic of China until they prove they can make good parts.

If you're upgrading the injectors, I'd definitely go with a fuel management system that can let you control them better - ideally a standalone, or at least a piggyback. The stock ECU won't know what to do with a set of 550 cc injectors.