turbo should i get a bigger tb

im working on building my integra 98 Ls for turbo and i getting ready to replace my intake manifold do i need to replace my thottlebody im not sure what size it is now but im thinking about going with a 68 to 70 mm also im going to run about 12 to 15 psi do i need to replace my fuel rail or build up my fuel system if im only going to be running around 12 psi??

I would suggest the 70 mm throttle body and yes you will need a bigger fuel pump and 310cc injectors, the fuel rail will be fine stock. You might also want to consider a ignition system. What manifold are you puttting on the car? I have heard that the JG Edelbrock is one of the best for turbo apps. Also for anything over 12psi I would reccomend some forged pistions and rods, and while you have it torn down you might as well put in a block guard to be safe. Then you could go higher than 15psi.

:iagree: my thoughts exactly..

i was thinking about gettting the JG Edelbrock because i to have heard its really good for turbo. what is the best ignition system i know a lot of people use the MSD but is that the best? what is the best forged pistons and rods ive heard that JE makes good pistons and eagle make good rods but f you know a some better ones please let me know. what is the block guard you are talking about? if im only going to run 12 psi for now do i need to get a better fuel pump and injectors now or can i wait til i go higher boost??

No you will have to upgrade the fuel pump and injectors vefore the boost. The stock injectors will not be able to supply the extra fuel and the pump won't either. Now that i look back on it you should probably look at some 440 cc injectors if you are really looking to run 12+psi.

crower also makes very good rods