You dont have to run APR software just becuase youve got their exhaust and HPFP
you are right there,
However, their new V3.4 software for K04'd cars is seriously impressive to say the least.
Miles ahead of there V3.1 or older software.
Plus now releasing their APR Mobile device.
You will be able to fault code scanning/erasing and data logging from your cell phone via bluetooth. Also MAP switching, locking/unlocking ECU etc.
I use APR myself as I know their products well, but also have an extremely good relationship with them.
you need to look at your tuners locally, what their reputation and servicing/knowledge is.
Then go down to the point of tuning software. There after you can start deciding who you want to represent.
Looking at APR post over the years, the only 2 real things that ever got mentioned were,
1. Either too expensive!!
2. Lower power than other tuners (strangely enough APR was never slower thou, go figure)