First off, I'm not trying to start any sort of tune war here or anything. I have had at least one HPA part on every MKIV+ car I've owned (4 at present) and have good faith in the quality of their tech and the development that goes into it.Exactly my point. Why didn't they do this from the start or at least as an stag 3+ upgrade. Obviously the kit is not perfect when fueling system is stressed out to its limits. (per HPA quote)
I am an APR user and fan and always thought they did it the right and safe way but with the highest output.
When reading about the HPA upgrade kit I'm not sure anymore when it comes to the stage 3 FSI kit....
I dunno about other Stage 3 owners, but I've certainly never experienced anything that would lead me to believe my car is running on or beyond the bleeding edge of safety. There are a lot of APR Stage 3 Golf R and TTS cars running around racking up daily driving miles, hard track miles, and everything in between. I've got a lamda reading on my FIS, and it never finds its way into (or even near) the danger zone under load. The accelerated cam follower wear is something you'll see with basically any flavor of tune that requires an upgraded HPFP.
If you ever feel that you want more perf than Stage 3 can provide from APR on this car, the Stage 4 program is there waiting for you. If just a little more is what you want, the LPFP upgrade adds an additional layer of safety and a nice bump in area under the curve for much less dough. Otherwise, if you're looking for 4th party support for a Stage 3 car - this is out there now too.