My motor has been smoking pretty bad lately and now it is time for a rebuild. It is a GSR w/ b16 head. I am planning on purchasing ctr pistons for it, and i was just curious on what kind of power gains i will be looking at. I have searched and found no definite answer.

 

your going to up the compression if you get ctr pistons I believe. I know the ITR pistons will. The gains will be minimal for numbers but the "butt dyno" might feel a little more pull in lower rpms

 

ud be wasting ur time, too much compression, not enough supporting mods, wont feel any faster, may be slower even, plus the added risk of most likely having detontation,
if u want higher cp i wouldnt go past jdm p73 itr pistons, will give u a nice bump without too much

ur setup now is running around 9.8:1cp, assuming ur using the USDM block/pistons(hope u realize the b16 head lowers ur cp)
ur looking at 12.7:1cp on the ctr's(PCT)
the jdm p73 itr's will give u around 11.3:1
a stock USDM gsr has 10:1

ur motor wont like the high dome of the PCT piston either