Im just tuned my PFC by Onward Motorsport few days ago... B4 it, my SR20 was running in very high fc and the power was not satisfied at all... After a few hours on road tuning by Onward Motorsport, my car now feel very energetic and im satisfied with fc that given me the power and respond... The boss has great experience in tuning PFC and Vpro, SR, RB engine... They also maintain alot drift and time attack track car... If u guys wanted their contact, can pm me..
Base on my experience, i feel that on road tuning is more accurate than dyno tuning...