Onya CHILI. I little bit of sense and sensability. A big thumbs up ! (keep putting an end to these Zcar urban myth's, I like your style)
Always ran between 14-17psi If you get the 650cc put in you could obviously run more fuel, so if your fuel map is spot on and you have u/graded ic or fmic how much you think you could run then? Will you see a difference of power? If its 1 or 2 hp then i don't really think its worth it though Nate
The yella fella will make 16 PSI at about 3500rpm, and will hold 15-16 PSI through to about 5500rpm. Boost drops off to about 13 PSI at the redline.