Oil Problem

[igota33]

this is my first post, i'm a bit of a newbie, so bare with me. i've recently purchased a r33 gtst and have done some work to it. i've got forged pistons, tomei metal head gasket, fully balanced bottom end, power fc, e-boost 2 at 9,12 & 14.5psi, front mount, air filter, bov, 3" exhaust with standard turbo (only for another month or so) and am putting out 213.7kw at the wheels (dyno dynamics shootout). my problem occured tonight after about 1/2 an hour of driving. under hard braking, i observed what i think is an oil starvation sort of problem. my knock sensor picked up a signal too. it sounded like a mettalic pinging sound. car seems fine and only occurs under hard braking. oil light flashed for about a second and everything was normal again. anyone heard of a similar problem? i'm thinking of fitting a bigger sump to increase oil capacity. are r33's known for oil problems? all help is appreciated.

[igota33]

just an update. wasn't an oil problem. it was the engine light coming on cos of knock sensor. cat is disintergrating and pieces are flying around inside making loud noise. nothing major thank god.