surging issue when hot

[rob101]

well i read somewhere it could be the ECU on the way out. it started off only happening once every couple of trips now its more frequent. i had to take 2 attempts getting up a hill from the parking lot behind a shop last time i drove it. It'd be good to throw it to some of the mechanic gurus here. cos I am bad at diagnosis and i really feel like a git for throwing parts at it. but honestly i can't work it out.

[GJPinAU]

I'm putting my money on the fuel filter