Supra fuel pump rewire / pfc remap?
Supra fuel pump rewire / pfc remap?
10-03-09, 04:27 AM
#4
I'm jus little confused since i've read this thread:
https://www.rx7club.com/3rd-generation-specific-1993-2002-16/more-proof-fuel-pump-rewire-improves-fuel-pressure-565645/
it seems that rewire fuel pump reach powerfc theoretical target AFR...?( here with stock fuel pump)
https://www.rx7club.com/3rd-generation-specific-1993-2002-16/more-proof-fuel-pump-rewire-improves-fuel-pressure-565645/
it seems that rewire fuel pump reach powerfc theoretical target AFR...?( here with stock fuel pump)
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10-03-09, 07:34 PM
#8
i don't have adjustable fuel pressure regulator
actually injector duty go to 95 % ( according to pfc) wot in 1ST gear 7600 RPM/ 14 psi
was thinking rewire my supra fuel pump will lower injector duty...
MODS ARE:
cheap bastard air box/K&N with 99' air duct/ ARC RACE SMIC/ ELABTRONIC INTELLIGENT INTERCOOLER WATER SPRAY / EFINI Y PIPE/HKS TWIN POWER /NGK Power Cable Racing Wire 0.9k Ohms/m) / HKS DOWNPIPE/SARD HIGH FLOW CATALYSER/BLITZ NUR SPEC R/ HKS EVC V BOOST CONTROLLER/SUPRA FUEL PUMP/stock injectors/APEXI POWER FC FD3S4 BASE MAP /STOCK TWINS @13.5 PSI
10-03-09, 07:50 PM
#9
It won't lower duty cycle unless you take fuel out of the map. The duty cycle is in direct relation to what your base map is.
With the rewire Duty cycle will remain the same but mixture will be richer. You can then take fuel out of the map and lower duty cycle while bringing the mixture back where it should be.
With the rewire Duty cycle will remain the same but mixture will be richer. You can then take fuel out of the map and lower duty cycle while bringing the mixture back where it should be.
10-03-09, 07:51 PM
#10
MODS ARE:
cheap bastard air box/K&N with 99' air duct/ ARC RACE SMIC/ ELABTRONIC INTELLIGENT INTERCOOLER WATER SPRAY / EFINI Y PIPE/HKS TWIN POWER /NGK Power Cable Racing Wire 0.9k Ohms/m) / HKS DOWNPIPE/SARD HIGH FLOW CATALYSER/BLITZ NUR SPEC R/ HKS EVC V BOOST CONTROLLER/SUPRA FUEL PUMP/stock injectors/APEXI POWER FC FD3S4 BASE MAP / FAST REACTING AIR TEMP SENSOR/ STOCK TWINS @13.5 PSI/
10-03-09, 07:53 PM
#11
It's the same concept. More voltage = more fuel from the pump = richer. That's the whole point of doing the rewire.
Plus I did the rewire when I was only running one pump. I had to remap then, and then had to remap again when I added the second pump. Anytime you have more fuel, whether it be from a larger fuel pump, a second fuel pump, a boost a pump, larger injectors or higher base pressure you need to remap.
Plus I did the rewire when I was only running one pump. I had to remap then, and then had to remap again when I added the second pump. Anytime you have more fuel, whether it be from a larger fuel pump, a second fuel pump, a boost a pump, larger injectors or higher base pressure you need to remap.
10-03-09, 08:05 PM
#12
It's the same concept. More voltage = more fuel from the pump = richer. That's the whole point of doing the rewire.
Plus I did the rewire when I was only running one pump. I had to remap then, and then had to remap again when I added the second pump. Anytime you have more fuel, whether it be from a larger fuel pump, a second fuel pump, a boost a pump, larger injectors or higher base pressure you need to remap.
Plus I did the rewire when I was only running one pump. I had to remap then, and then had to remap again when I added the second pump. Anytime you have more fuel, whether it be from a larger fuel pump, a second fuel pump, a boost a pump, larger injectors or higher base pressure you need to remap.
SO I NEED A REMAP...
my mods are enough to a proper tune?
MODS ARE:
cheap bastard air box/K&N with 99' air duct/ ARC RACE SMIC/ ELABTRONIC INTELLIGENT INTERCOOLER WATER SPRAY / EFINI Y PIPE/HKS TWIN POWER /NGK Power Cable Racing Wire 0.9k Ohms/m) / HKS DOWNPIPE/SARD HIGH FLOW CATALYSER/BLITZ NUR SPEC R/ HKS EVC V BOOST CONTROLLER/SUPRA FUEL PUMP/stock injectors/APEXI POWER FC FD3S4 BASE MAP / FAST REACTING AIR TEMP SENSOR/ STOCK TWINS @13.5 PSI/
10-03-09, 08:15 PM
#15
The base map is usually safe for the mods you have, but you're leaving power on the table by not getting it mapped. Especially once you rewire the pump. You will lose power without a remap. Just be sure to take it to someone that knows how to tune rotaries. Or get a wideband, datalogit, and tune yourself
10-03-09, 08:21 PM
#16
The base map is usually safe for the mods you have, but you're leaving power on the table by not getting it mapped. Especially once you rewire the pump. You will lose power without a remap. Just be sure to take it to someone that knows how to tune rotaries. Or get a wideband, datalogit, and tune yourself
and I'm not so confident to map myself...
10-03-09, 09:03 PM
#17
Well if you want to modify an FD one of the most important aspects is good tuning. Do a search for chuck westbrook and talk to him about his tuning notes. That will get you started on learning to tune. Read everything you can until you understand it.
