either way whiplash... i would say pull the vacuum line on the FPR. cap the tbody side and run with the open FPR vacuum, this will make for a full time highest fuel rail pressure and see if that changes things.
Now someone step in and say if this is a bad idea.
Whoa! Do what!? Ok before this goes any farther I think I found the problem...
I lifted the tank just far enough to get the air box cover off yet still run it, fired the ol girl up and watched to see if the secondary throttle plates would open when see warmed up and guess what? Nope they didn't open...sooooooo...I stuck my finger down her throat and held them open
**note** if you ever do this maneuver I would advise caution! That little servo that moves the plates is alot stronger than I though it would be!!**
While holding them open I brought it to 1/2 throttle then gave it a quick stab and what do ya know no bogging, so I'm wondering why aren't they opening?? They cycle as they should when powered up so what's up?......Think whip! Think!...it was at this point I had somewhat of a vision! The picture is was seeing was hazy but it was a radiator and a thermo-sensor...AH HA!!!
I spring to the other side of the downed machine and unplug the thermo-sensor then fired er up and low a behold the sec. plates open as the throttle does! So I repeat the 1/2 throttle stab and when I stabbed it then sec. plates opened almost fully where as before they would barely move...
See when I changed the radiator awhile back to the ZX radiator the GSXR thermo wouldn't fit! Grrrr
so in typical whip fashion I proceed to grind the shit out of it and rethread it to fit my new adapter(feeling foolish now
) well in doing this I allowed the inner sensor part to ground out to the radiator sending the ECU into a tail spin, when I unplugged it the ECU jumped to the default allowing the plates to open(not properly) but better than grounding out