Engine rev cut in corners

Hi all, i took my 9 to a track day and had issues about engine rev cuting at circa 7krpm only on 2nd gear full throtle exiting corners, every single 2nd gear corner, engine was behaving like rev cut, ony during FULL throtle.

Its a standard B16b engine 205k km, no oil consumption issues, runned by a p30 JDM chipped ECU, advan AD08R tyres, modified OEM airbox with KN filter.
In track session car was HALF TANK filled.

Only hapenned before with OEM PCT ECU in 3rd gear 90 mph full throttle long corner 1/4 fuel tank, which was solved by filling up to 3/4 tank. This time, same corner, p30 ECU half tank, no problems.
Also hapenned with OEM ECU in 2ng gear full throttle corering and climbing, almost empty tank. NEVER HAPPENED on STRAIGHT LINE, even in reserve.

USING 98 octane petrol

Sometimes car hesitates to idle when warm.

Any idea why?

I know the standard b-series suffer oil starvation on long corners with track tyres, and the AD08R is pretty decent... Do you have a baffled sump?

Yes i do... Oil level was at the top mark before and after being in track. Oil filter is a standard blue print one..no leaking. I do have oil temp gauge, stable circa 85 to 90 C. Using Castrol Magnatec 5w40