Man I was at MIR today and ran my best time ever on my bike (8.81@ 156mph). A problem has come up but i can figure out what it is. On some passes the bike acts like it's on the rev limiter and wont rev past about 6 or 7 grand. I can watch the fuel pressure and it starts bouncing between 50 and 60 psi. It's hard to pin point the problem because it does not happen every pass. I looked at the wideband log on a good run and i was 13.0- 13.8 afr. here is a list of what I have and what I have tried. Let me know if I am missing something.
1397 12.5:1
stock head two intake cams degreed 105/106
45 shot of NOS
PCIII
Dyno Jet ignition module
s2000 injectors
walbro fuel pump (the one Hahn puts in their stage 1 kits)
I have replaced the following
PCIII ( on my third one ---just making sure because I get the 32-35 injector codes)
s2000's (two Sets-- all cleand and flow tested)
Played with fuel pressure and no change. Running 55 psi right now ( seems a bit high for s2000's)
I dont think it is cam timing because it does not do it all the time.
Any help would be greatly appreciated and thank in advance:thumb: