Q: If i was to fit a bigger turbo to a RB25det R33 skyline what other parts should be upgraded so you dont stuff the engine
A: http://www.skylineowners.com/forum/showthread.php?t=66975 The link above is good advice really,its from the Skyline forum and shows mods to bhp gains and what is needed for the bhp gains. Also handy site for any Skyline and RB engine questions a forum i use before adding any mods. It would be too hard just to add a few parts as some parts link to replacing other parts etc so your best looking at the link and getting on a free Skyline forum whom can give info step by step and the right parts to use and there numbers.