NIB, 2 BOSCH 4.0 bar Fuel pressure regulators
#1
07-02-2009, 11:35 AM
NIB, 2 BOSCH 4.0 bar Fuel pressure regulators
New in box, bought for a project that I decided not to do, never installed.
I understand they are popular upgrades for the VW/Audi/Porsche crowd, so I'm posting them here. Built a high flow/pressure fuel system for my car and went a different route.
2 available
4.0 Bar
Bosch Part Number: 0 280 160 575
Again, these are brand new in original boxes/packing. Was thinking 70 Shipped , OBO. Please let me know. Local pickup can save shipping, local to: SE MI.
4.0 Bar pressure regulators will increase base fuel pressure over a 3.5 bar regulator by aprox 7.35 PSI and increase injector flow by aprox 7%, provided your pump can handle it. If you are running at, around or higher than a 95% duty cycle with a 3.5/3.0 bar regulator, this will give you more headroom for power with out having to upgrade your pump/injectors and put you in a more optimal duty cycle range. Higher pressure means better fuel atomization and lower duty cycles. I planed on running this with a 255 LPH Walbro, on a force induction engine running ~15 PSI of boost which would give me a final fuel pressure of ~74 psi under Wide Open Throttle.
You can find out your fuel increase with : http://www.csgnetwork.com/fiflowcalc.html
Any fueling changes may require ECU tuning, please keep that in mind.
Pictures soon.
I understand they are popular upgrades for the VW/Audi/Porsche crowd, so I'm posting them here. Built a high flow/pressure fuel system for my car and went a different route.
2 available
4.0 Bar
Bosch Part Number: 0 280 160 575
Again, these are brand new in original boxes/packing. Was thinking 70 Shipped , OBO. Please let me know. Local pickup can save shipping, local to: SE MI.
4.0 Bar pressure regulators will increase base fuel pressure over a 3.5 bar regulator by aprox 7.35 PSI and increase injector flow by aprox 7%, provided your pump can handle it. If you are running at, around or higher than a 95% duty cycle with a 3.5/3.0 bar regulator, this will give you more headroom for power with out having to upgrade your pump/injectors and put you in a more optimal duty cycle range. Higher pressure means better fuel atomization and lower duty cycles. I planed on running this with a 255 LPH Walbro, on a force induction engine running ~15 PSI of boost which would give me a final fuel pressure of ~74 psi under Wide Open Throttle.
You can find out your fuel increase with : http://www.csgnetwork.com/fiflowcalc.html
Any fueling changes may require ECU tuning, please keep that in mind.
Pictures soon.
#2
07-17-2009, 02:10 PM
1 sold and received to a very happy buyer! 1 left!
70$ shipped anywhere in the continental 48 states!
70$ shipped anywhere in the continental 48 states!
#4
08-29-2009, 06:35 PM
Hey, so this sounds cool to me. Got a stock A4 but I'm going to chip it. That'll put me at around 16psi.
Stock injectors, stock rail, stock pump. Do I need to upgrade these first? Still learning about fuel system upgrades. If I bought a chip after this was installed would the chip somehow take account for this higher pressure assuming it was stock? (Again, not sure how it works)
Stock injectors, stock rail, stock pump. Do I need to upgrade these first? Still learning about fuel system upgrades. If I bought a chip after this was installed would the chip somehow take account for this higher pressure assuming it was stock? (Again, not sure how it works)
#6
08-31-2009, 09:33 AM
sold the last one 3 weeks ago on another forum.
As far as I know they just drop in for you, and may or may not require computer adjustments. I don't own an Audi, but I know you use the same pressure regulator style as the vehicle I bought this for. I even ordered these off of an Audi site.
As far as I know they just drop in for you, and may or may not require computer adjustments. I don't own an Audi, but I know you use the same pressure regulator style as the vehicle I bought this for. I even ordered these off of an Audi site.
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