Hope this helps somewhat, since I have all of the bike's original emissions and float bowl equalization equipment.
I think what you're calling the RAM air mod is meant to be the fload-bowl mod, where you take the equalization tube coming up from the carbs and plumb it into the clean air side of the airbox, so that some of the snorkel and vacuum plumbing can be eliminated. I've heard a few do that and they seemed to think it worked out.
There's no problem setting the floats to 17.5mm so long as it doesn't screw up how you like your bike to deliver power. Higher is leaner and usually translates to poor throttle response and/or RPM flat spots. If your bike isn't exhibiting either, then leave it.
Your main jets, factoring in that FP is considered a direct conversion to Keihin, would seem a hair lean from stock and for San Antonio, TX. That's what I run on my E1 and it lives at 4,500' AMSL. I had to adjust the jetting down specifically because the bike would bog going over 10,000' summits as the AFR dipped below 13.3:1. Maybe yours is Dynojet.
To me, the ZX-9R has so much power, it's scary. I'm not going to worry about an extra pound of equipment when the bike only stops accelerating when it's into redline in top gear. Honestly, 175 MPH is too damn fast as it is and the fact that even where I live here at altitude, it's difficult to keep the front wheel planted. Why on Earth would I want to screw all that up by mod'ding it?
Alright! Trading bikes for a while was fun.I'm ready for mine back. No, seriously, get off my bike. Ahh, what a privilege it is to have such a sweet ride.
At the track she's said to be outclassed, but on the street, she reigns unmatched. She's the only big-bore canyon carving hypermiler I know of. -- Picture gallery
, K&N air filter, SuperTrapp
Aluminum Racing Series exhaust (Made in USA)
, ZG touring shield, & otherwise stock.
Science & OODA literate. ACA covered.