to start off i have a b18 with "b16 internels" CRX si. im looking at getting a 50 A/R Compressor, .63A/R Turbo . i aslo planing on gettin aftermarket fuel rail , fuel pump , cams, and intake manifold . just wondering how much boost should be good with me only having "b16 internels" ? i dont want to be dealing with things breaking just need some opinons on how much boost should be good .

 

Skip the fuel rail and cams, you don't need it. Also the intake manifold, unless you absolutely want it. Those parts are good, but not necessary on a "stock" B18. You have to think differently when going turbo. They will help you get to the same power level with less boost, but with out them, you can reach the same power with more boost. The name of the came isn't the amount of boost/psi, it's the amount of horsepower.

For example:
Smaller turbo + 21psi = 200hp
Big turbo + 5psi = 200hp

I suggest doing some research first bc everything you mentioned minus the type of turbo (thank you for not saying t3/t4 turbo) speaks of all this being new to you.

Forced Induction - Honda-Tech
https://honda-tech.com/forced-induct...etups-1365747/