walbro 255 intank fuel pump and vortech fmu
01-24-2004, 06:48 AM
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walbro 255 intank fuel pump and vortech fmu
im going to be using a TD05-18G turbo and was wondering if the walbro intank fuel pump and fmu is all i need to supply fuel to the motor or should i get bigger injectors or an inline fule pump also. thankz
01-24-2004, 06:49 AM
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Re: walbro 255 intank fuel pump and vortech fmu (vietjdmboi)
FMU's require an inline fuel pump to create higher fuel pressure. The in tank can do high volume, but not high pressure.
01-24-2004, 06:58 AM
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Re: walbro 255 intank fuel pump and vortech fmu (mctonyb)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mctonyb »</TD></TR><TR><TD CLASS="quote">FMU's require an inline fuel pump to create higher fuel pressure. The in tank can do high volume, but not high pressure.</TD></TR></TABLE>
Actually they do make a high pressure intank fuel pump (i have one).
Holley/walbro 255lph HP.
Works great for me.
vietjdmboi.....how much boost do you plan to run?
5psi or less you can use stock injectors, above that i wouldn't recomend using stock injectors.
Actually they do make a high pressure intank fuel pump (i have one).
Holley/walbro 255lph HP.
Works great for me.
vietjdmboi.....how much boost do you plan to run?
5psi or less you can use stock injectors, above that i wouldn't recomend using stock injectors.
01-24-2004, 07:11 AM
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Re: (vietjdmboi)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by vietjdmboi »</TD></TR><TR><TD CLASS="quote">i was thinkin about 6psi daily driven</TD></TR></TABLE>
You should be fine. I ran that on my d15 and stock injectors.
Your fuel pressure will be pretty high so i would recomend 310cc injectors and lower the fmu ratio to 6:1 or 8:1.
You should be fine. I ran that on my d15 and stock injectors.
Your fuel pressure will be pretty high so i would recomend 310cc injectors and lower the fmu ratio to 6:1 or 8:1.
01-24-2004, 04:07 PM
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Re: (vietjdmboi)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by vietjdmboi »</TD></TR><TR><TD CLASS="quote">so i shouldnt run a 12:1 ratio fmu?? </TD></TR></TABLE>
with stock injectors yes 12:1
larger then stock then you can lower the ratio.
I'm runing 310cc injectors with a 4:1 fmu, and a sfc to lean it out more. weird but it works.
with stock injectors yes 12:1
larger then stock then you can lower the ratio.
I'm runing 310cc injectors with a 4:1 fmu, and a sfc to lean it out more. weird but it works.
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01-24-2004, 11:48 PM
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Re: (b16ahybrid)
I had a 12:1 fmu in my car for a while, it seemed to work fine. Later on I got a feilds sfc fuel controller and was tuning the car with that. One day i took out the fmu to see what the car would do and to my suprise it felt the exact same. I got on it and shut the car down and checked the plugs and they looked the exact same. Now i find it alot easyer to tune my car without the fuel pressure rise to add to the equation. But if you dont have a fuel controller and your running stock injectors the 12:1 fmu works fine on 7-9psi.
fuel controller & bigger injectors=
fmu=
fuel controller & bigger injectors=
fmu=
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