[aus jd 2703]

ok ive always been keen to run WI on my GT four celica, but im curious. will WI gain me any power if i cannot re tune to take advantage of the increase knock resistance?
i run a stock non adjustable ecu with a water to air intercooler so intake temps even when hot never go past 60'c even in 35'c summer days. i like the idea of WI but at this stage am not sure i will see any real benefits?? thanks guys