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![]() Enthusiast ![]() ![]() ![]() ![]() ![]() Joined Jul 16, '04 From Los Angeles Currently Offline Reputation: 8 (100%) ![]() |
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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Enthusiast ![]() ![]() ![]() ![]() ![]() Joined Aug 16, '03 From Bay area Currently Offline Reputation: 0 (0%) ![]() |
you need to get an fuel regulator according to what size injector you are using.. The boost controller does what is says. it controls the boost, and nothing more. It prevents the boost pressure from going above the desinated amount.
The a/f gauges are junk, most of the time they are not very accurate. You need to tune the a/f curve according to your set up with a air/fuel mixture controller, like a stand alone ecu, emanagement, or apexi.. Retarding the timing manually is not very accurate. The more you retard timing the safer you run with a less chances of detenation, which also means the less power you make. The less you retard timing, the more power you will make, but the high chance of your motor blowing up. So you have to fine tune it accourding to boost and the fuel you are using. (Race fuel 87 89 91?) Think of it this way, You are watering a garden with a garden house. The fuel pump is like the water pressure from the house. The fuel regulator is like the valvue you turn to turn on the water, you can adjust this accordingly. The injectors is like the nozzle you squeeze to acontrol where the water goes again. This nozzle can range from a fire truck nozzle, or a normal garden house. And you are like the stock ecu. You can adjust how much water ( fuel) to put out, But if there isnt enough water pressure or the injectors cant spray enough, that is when it gets dangerious the plants die ( your motor runes lean). Now think about differnt combinations. put a fire truck hose nossle on the garden hose. No matter how big you open the nozzle, the water coming out is not good enough to spray the plants... Very rough ideology... hope that clears it up abit. Now i'm waiting for a flaming for hacking up this stuff. I probably said something wrong also.. go ahead flame!!! |
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