Berrima would tell you they're great, but of course they would. Try getting in touch with chip tuning in Sydney, they have a range of different chips and tunes. Or look for a good ECU remap, wouldn't cost much more than$800 and they can switch off the EGR. Mine has a chip-it and it's good, despite what some here might think (and say!). Its plug and play and is a mild tune and has a dump-pipe temperature probe which can be set to turn off if the temps rise. Cost about $1000 new but there's some competitors now.
Btw, I tow 2.5 tonne caravan everywhere the Hilux goes. (I have a couple of other cars so the lux is in the shed until we travel again)
If you're is a late 2014 it may have the revised pistons so shouldn't be so fragile. (Post July 2014)
My 2013 auto D4D DC SR5, prefilter, 3" exhaust and Chip with egt probe