I have APR because I am one of the few who blew the seal on my OEM pump with Autotech internals - the OEM/Autotech set-up ran fine for about 20k miles then I had a remap which put the requested rail pressure up to 130 bar and it went pop after a week or two. Luckily I went to check my oil and could smell the fuel in it very clearly so got it sorted before any damage was done.