I do not have a Power FC but he does specialise in the PowerFC and uses one on his own 450hp CA18DET which he has been running for 13 years. He's owned the ECU for 11years so knows the hardware n software inside out. He's even in some cases mended peoples broken PowerFC
I do however use Steve Sadler of FC Tuning.
I run his recommended Nistune ECU Solution on my R34 GTT.
See my sig - the guy's a GENIUS.
Incredibly knowledgeable guy - especially in tuning Nissan Engines, in particular the RB
His attention to detail is second to none and I trust this guy 100% & his follow up advice and customer service is amazing.
He always expresses a keen interest in all your feedback.
My personal opinion is that :
I would recommend STEVE @ FCTUNING To anyone
Steve has been regularly arranging ECU Mapping and Tuning sessions in Europe & Jersey for a good few years now and bases them @ DP Engineering.
He can tune with your Power FC no problem at all too.
His points of contact are :
You may also want to look here for other folks comments on Steve :
This is my small thread on Driftworks personally thanking Steve :
This is the link to my 2nd re-map with Steve :
I have used Steve Sadler from scratch after deciding on re-map options for my car.
After his personal advice,my results speak volumes of his work and capabilities.
If ever i decide on any future plans,tuning or mapping then I will now only use Steve as he's pretty BLUNT and straight up as you can see.
He doesnt like wasting peoples time and neither yours for that matter. He tells it how it is!
Cheers from a 100% satisfied customer of Steve's
Neil Robinson in Sunderland.