building motor

[badpie426]

i have a type r motor, b18c5. i just put forged pistons, forged rods bored my cylinders from 81 to 83 mm and sleeved it with dartin mid sleeves....hondata dyno tune, bigger fuel injectors, its at the shop right now, i lowered compression to 9:0:1 i plan to turbo later. What kind of difference in performance can i expect until i turbo it, also some one told me that i dont need to get a engime managment system yet an to just run the stock one until i turbo it, is this true, an when i do turbo it should i build my head first or can i keep the stock type r head

 

[rwlsvtec_03]

Don't build the head, there is no point considering there are people making 900hp with stock heads. Considering you stated that you have HONDATA, you do not need any other tuning software. You can not run your stock ecu with bigger injectors.
Just throw your stock injectors back in with your stock ecu and you will be fine. make sure you do a break in on the motor before you beat the hell out of it.