no. a FPR is a worthless POS if you ask me, and moreover, it will NOT function like an FMU. if anything, its use is for setting rail pressure at idle. Once you start boosting, without an FMU/vafc hack/hondata/etc to throw in more fuel, you will lean out hard and go boom.
a larger rail, larger injectors, and so forth just gives the oppertunity for more fuel to go in, but without a pump that can adequetly supply that, there simply won't be fuel there to use in the first place. Since you already have the walbro, use it.
If it were my car, id scratch the FPR, and the fmu, and since you plan to get the vafc, just run the vafc hack with the pump, dsm injectors, and your str rail.
as for plugs, Larger the number = colder the plug.
a #7 could be either 1 step colder or 2 steps colder depending on the motor.
i believe D series and the B18A/B use a #5 heat range, whereas the DOHC VTEC motors use #6 heat range plugs.
6's: > 350whp level
7's: 350whp-450whp level
8's: 450whp-600whp level
7's are what you want. They are probably overkill for your setup, but will still help in providing a good spark that won't get blown out. You'll get better gas mileage and partial throttle response with a hotter plug since it combusts the mixture greater.
so, bkr7e's is what you want. commonly reffered to at auto stores as part #6097
Also, the BKR7E is a also used standard plugs for certain Honda/Acuras.
Honda part number: 98079-5714J
The BKR7E has the "V Power" electrode and is not pre-gapped.
The BKR7ES-11 has the standard electrode and is pre-gapped.
you should get the "V-Power" model for a turbo application as its said to be far superior to its standard counterpart when it comes to forced induction. The pregap is kind of useless for our applications because they are pre-gapped too big anyway (.035). The recommendes gap for an FI motor is .030, or up to .027 for a higher power setup.
Everything you could ever want to know about plugs can be found here:
http://ngkaz.home.att.net/wsb/html/view.cg...home.html-.html
If all these numbers mean nothing to you, this chart will help explain it.