Hey y'all, I have a completely stock 1991 R32 GTR, yesterday I took my car out and went for about a thirty minute drive. It was fine on the way there but when returning home I think the car might have gone into a limp mode. I was cruising in 5th gear around 130km/h, the hicas light came on and there was a significant loss of power. About a minute later I hear a thump, the car starts driving normal again and is fine the rest of the drive back.
This is the second time its happened, same as now it was fine on the trip there. On the way back it had the hicas light on but that time I would feel the power going in and out before hearing the same thump and it being fine.
I have no idea idea what causing this, but if anyone has any ideas it would be great as a start chasing the cause of this. Also I can provide more details if needed.
Thank you