i have cam gears an intake and a mandrell bent catback exaust how can i beaf up my b16a1 engine which parts would add a lot of power.

 

go with type-R parts, can't go wrong with OEM parts...
ITR intake manifold, ITR cams, CTR pistons (if you feel like tearing your block apart), reprogram your ecu, some kind of fuel system upgrade (injectors come to mind), and then dyno tune tune tune....

A Lightened flywheel is another great bang fo' yo' buck upgrade too. Will give you enhanced acceleration.


adding these parts to a B16 engine will surely liven it up.

 

get a bigger displacement bottom end, b18a/b/c or b20b/z