So on a run with only 1900 microseconds of on time, my fuel rail pressure was only at like 11,000 - 14,000, only hit 14,000 on the shifts, i run a defuel to 65 mm3. My tunes always feel like they have no power on the top end. So, is my cp3 bad or do i just need a lift pump? And my fuel rate was at 98.2 mm3
OR could it be the fpv, it has always been bad and surged.
__________________ 2001 2500HD LT CCSB 4X4 LB7 TAPE DECK INCLUDED
Leather, Power everything, Autometer Cobalt Boost and Pyro, HID headlights/fogs, 05' Tailights, De-Badged, Some sound stuff
35" Wrangler DuraTracs on KMC 20" Rockstars and a 6" procomp drop knuckle and black Westin runners. EFILive tuned with DSP5 for Extra Go-Go Modded intake horn, Banks Big Head wastegate, banks ram-air intake, banks straight pipe
Other TOYS:2005 YAMAHA YZ250F Rat Racing motor Enzo Racing Suspension: Forks and shock
Need List: CP3!!!!
Wish List: Transparts iv, Lift pump, Turbo upgrade.
Last edited by gya0ma7ha : 11-05-2009 at 02:07 PM.
So on a run with only 1900 microseconds of on time, my fuel rail pressure was only at like 11,000 - 14,000. My tunes always feel like they have no power on the top end. So, is my cp3 bad or do i just need a lift pump? And my fuel rate was only at 98.2 mm3
OR could it be the fpv, it has always been bad ans surged.
Could be a lift pump issue. How does the pressure look with a stock tune in it? Whats the rest of your pulse table look like? Are you pulling a lot of fuel all through the table or just at the top? Also what about your TBIQ table? Whats it look like?
Quote:
Originally Posted by DMAXchris
Something is wrong with the CP3. 1900us is damn near stock. You should have roughly 23,000 psi @ 180 Mpa.
180MPa IS 26,106psi, not @ lol.....and 1900μs is about 30% more than stock at 98mm3 around 180MPa
Well, im in class so i cant get exact numbers from my tunes, i guess i need to log a stock run as well. But, i keep the IPW at mostly stock till about 50 mm3, then ramp it up (I'm not a great tuner, haha, but i try) Its a gradual curve down as pressure goes up to 160mpa, thats where the injector on time flattens out at 1900 us. My TBIQ, at 100% throttle, is a smooth step up from 60 at 600rpm to 100 at 2000rpm. I really appreciate any help guys.
__________________ 2001 2500HD LT CCSB 4X4 LB7 TAPE DECK INCLUDED
Leather, Power everything, Autometer Cobalt Boost and Pyro, HID headlights/fogs, 05' Tailights, De-Badged, Some sound stuff
35" Wrangler DuraTracs on KMC 20" Rockstars and a 6" procomp drop knuckle and black Westin runners. EFILive tuned with DSP5 for Extra Go-Go Modded intake horn, Banks Big Head wastegate, banks ram-air intake, banks straight pipe
Other TOYS:2005 YAMAHA YZ250F Rat Racing motor Enzo Racing Suspension: Forks and shock
Need List: CP3!!!!
Wish List: Transparts iv, Lift pump, Turbo upgrade.
__________________ 2001 2500HD LT CCSB 4X4 LB7 TAPE DECK INCLUDED
Leather, Power everything, Autometer Cobalt Boost and Pyro, HID headlights/fogs, 05' Tailights, De-Badged, Some sound stuff
35" Wrangler DuraTracs on KMC 20" Rockstars and a 6" procomp drop knuckle and black Westin runners. EFILive tuned with DSP5 for Extra Go-Go Modded intake horn, Banks Big Head wastegate, banks ram-air intake, banks straight pipe
Other TOYS:2005 YAMAHA YZ250F Rat Racing motor Enzo Racing Suspension: Forks and shock
Need List: CP3!!!!
Wish List: Transparts iv, Lift pump, Turbo upgrade.
__________________ 2001 2500HD LT CCSB 4X4 LB7 TAPE DECK INCLUDED
Leather, Power everything, Autometer Cobalt Boost and Pyro, HID headlights/fogs, 05' Tailights, De-Badged, Some sound stuff
35" Wrangler DuraTracs on KMC 20" Rockstars and a 6" procomp drop knuckle and black Westin runners. EFILive tuned with DSP5 for Extra Go-Go Modded intake horn, Banks Big Head wastegate, banks ram-air intake, banks straight pipe
Other TOYS:2005 YAMAHA YZ250F Rat Racing motor Enzo Racing Suspension: Forks and shock
Need List: CP3!!!!
Wish List: Transparts iv, Lift pump, Turbo upgrade.
are you sure you want my tune when your having issues with a tune with a pw much higher than this.
Ya, im gonna hold on to it so when i get this figured out, i can see what a good tune feels like. It's all up to you though.
__________________ 2001 2500HD LT CCSB 4X4 LB7 TAPE DECK INCLUDED
Leather, Power everything, Autometer Cobalt Boost and Pyro, HID headlights/fogs, 05' Tailights, De-Badged, Some sound stuff
35" Wrangler DuraTracs on KMC 20" Rockstars and a 6" procomp drop knuckle and black Westin runners. EFILive tuned with DSP5 for Extra Go-Go Modded intake horn, Banks Big Head wastegate, banks ram-air intake, banks straight pipe
Other TOYS:2005 YAMAHA YZ250F Rat Racing motor Enzo Racing Suspension: Forks and shock
Need List: CP3!!!!
Wish List: Transparts iv, Lift pump, Turbo upgrade.
Im gonna log a run with stock injector pulse width tomorrow and see what happens.
__________________ 2001 2500HD LT CCSB 4X4 LB7 TAPE DECK INCLUDED
Leather, Power everything, Autometer Cobalt Boost and Pyro, HID headlights/fogs, 05' Tailights, De-Badged, Some sound stuff
35" Wrangler DuraTracs on KMC 20" Rockstars and a 6" procomp drop knuckle and black Westin runners. EFILive tuned with DSP5 for Extra Go-Go Modded intake horn, Banks Big Head wastegate, banks ram-air intake, banks straight pipe
Other TOYS:2005 YAMAHA YZ250F Rat Racing motor Enzo Racing Suspension: Forks and shock
Need List: CP3!!!!
Wish List: Transparts iv, Lift pump, Turbo upgrade.
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