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> Newbie confused???? 5sfte, Numbers and how everthing relates!
post Mar 11, 2005 - 9:14 PM
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urbandork



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Ok im slowly doing a 5sfte. However when it comes to the fuel delivery system i get conused.

Things that im confused about
FMU's
Boost Contorller
Boost timing managment.
225 lph pump
330cc injectors

Ok how do they all relate and work together? What would happen with out them? which ones can i do with out asap and which ones can i put on later?

So far Im confused on the whole fmu thing. What are the ratio numbers representing and how does this relate to me? i suspect they are fuel compression numbers or something? How does it change the fuel flow?? if it even does that? How does a 2 bar map sensor get into this equation.

Boost contorller? what does it do i assume it has something with controlling boost but how and in what way? Fuel ??? Does it jsut mess around with the a/f mixture isnt this what a fmu does? Is it the same as an FMU? im so lost?

Whats all this talk about how much load is on the injectors and the % numbers? what r these number?

BTM retards boost right? can i jsut redo the timing myself? Or does it only retard it when there is boost? Can i run 8 psi with out retarding my timming?

225 lph pump. This just pumps more fuel into the chamber right?

330cc injectors. These allow for more fuel to be sparyed into the chambers right?

I have searched both this forum and google and i seem only to get more confused. I dont like putting something in my car i dont understand or explain how it works. Thus y im asking and want to understand how these things work.

Thanks a million in advanced cus omg im so confused.

This post has been edited by urbandork: Mar 11, 2005 - 10:34 PM
 
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post Mar 12, 2005 - 1:18 PM
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urbandork



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How do i know how much to regulate the fuel by? is this where and a/f gauge comes in. If so whats the ideal a/f mixture and is this number depended on how much boost ur runnign. Ill be running around 8 to 9 psi.

If it does have something to do with the a/f mixture i take it this is where the boost contorler comes it which can monitor the a/f and change it.

N e way i take it it would not be safe to run a 225lph fuel pump and larger injectors on a 5sfTe with out a feul presure regulator? right? Can i run the larger injectors (330cc) with the stock fuel pump and not worry about running lean IF im running 8 to 10 psi?

Humm retard timming by turning the distrbutor. I thought that i could but by how much. Is this also dependent on how much boost, Yes right?. (which i have to do n e way right 10 instead of 8?).

Thanks you guys for all ur help

This post has been edited by urbandork: Mar 12, 2005 - 1:19 PM

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