I got the fuel system update suggestion by a reputable KTuner 'tuner' as well.
Hondata has a fuel system upgrade which is the recommendation from PRL and 2 other well know sources.
When I sent this fuel system option to PRL, PRL support said:
Hondata has base tunes and mapping to adjust for that full kit, essentially locking you into using Hondata. If you're on KTuner unfortunately sort of "gave up" on the Type R, therefore there is not much support at all for big turbo and updating the fuel system. We would suggest switching to Hondata if you're going this route.
Isn't an option to find a tuner that works with KTuner to develop a map to work with a turbo/Hondata fuel system upgrade?
Would love to stay with KTuner, but the main question is >> can I do a turbo upgrade along with Hondata fuel system upgrade while still on KTuner?