Chimaera 500 work begins
Discussion
DonkeyApple said:
Sounds lovely. Was that a bit of vicous torque steer half way through?
Ah you noticed! thats an eagle eye, trying to get the power down in 2nd can be great fun but then up into 3rd you`ve still gotta be gentle with the throttle, Its only running the 14psi pulley as its still being mapped, trying to get the Bosch 044 to run with the returnless fuel system has been tricky but its heading in the right direction nowv8ndy said:
DonkeyApple said:
Sounds lovely. Was that a bit of vicous torque steer half way through?
Ah you noticed! thats an eagle eye, trying to get the power down in 2nd can be great fun but then up into 3rd you`ve still gotta be gentle with the throttle, Its only running the 14psi pulley as its still being mapped, trying to get the Bosch 044 to run with the returnless fuel system has been tricky but its heading in the right direction nowSILICONEKID340HP said:
Why does it not have a return back to the tank ?
Its the way Ford designed the fuel system, The ecu modulates the fuel pump voltage to maintain the fuel rail pressure. The idea is that your not circulating unused fuel to the engine and back to the fuel tank, heating it up causing more fuel vapours and more emissions.The trouble with the Bosch 044 is its doing to good a job with to much fuel!
v8ndy said:
Its the way Ford designed the fuel system, The ecu modulates the fuel pump voltage to maintain the fuel rail pressure. The idea is that your not circulating unused fuel to the engine and back to the fuel tank, heating it up causing more fuel vapours and more emissions.
The trouble with the Bosch 044 is its doing to good a job with to much fuel!
i've gone returnless on the rv8 in the tuscan racer. using an atl fuel system. pump and prv are in the tank..The trouble with the Bosch 044 is its doing to good a job with to much fuel!
common with the Ls installs to place the pump/filter/regulator/return around the diff, so there is only a single fuel run to the front.
interested to see how you get on with the bosch pump and regulating flow that way.... and very impressed with the "make it fit" approach...those are not small engines!
interested to see how you get on with the bosch pump and regulating flow that way.... and very impressed with the "make it fit" approach...those are not small engines!
SSPPGG said:
common with the Ls installs to place the pump/filter/regulator/return around the diff, so there is only a single fuel run to the front.
interested to see how you get on with the bosch pump and regulating flow that way.... and very impressed with the "make it fit" approach...those are not small engines!
It sounds like the LS fuel system may slightly differ? The Ford setup has no regulator, no return its all electronic. The fuel rail has a pressure sensor providing the ecu with the signal. The ecu then talks with another module, the FPDM (Fuel Pump Delivery Module) pulse width modulates the voltage to the fuel pump. The beauty with this setup is if your needing more fuel and your pumps maxed out! just increase the voltage and you`ll get more fuel "Simples" Kenne Bell sells a device known as BAP (boost a pump) which ups the voltage and the good old standard Ford FPDM will handle up 18volts.interested to see how you get on with the bosch pump and regulating flow that way.... and very impressed with the "make it fit" approach...those are not small engines!
The problem I`ve been having with the Bosch 044 is turning it down low enough, and we don`t know if it will last with PWM, its been causing driveability issue mainly stuttering on cruise throttle but thats pretty much sorted now.
For a job over the winter I`ve got a twin pump intank setup from an 05 cobra that I`ll "make it fit" somehow along with a small list of jobs to finish. But I just need to keep driving it at the moment to find out the niggles
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