i talked to technosqare today and they were tellig me about the fuel sytem that comes with the p.e. kit does anyone know anything about this or does anyone have the install instructions for this kit im curious to see what the fuel system looks like

 

upgraded fuel pump,
new fuel pressure regulator,
380cc injectors
and if you want bigger boost, technosquare's reflash of the ecu.

 

thnaks i know what it comes with but i would like to see the actual units and install if possible thanks for your help

 

i can take some picts of my fuel tank when i have time....

the injectors are simple. popoff the upper intake manifold. pop out the old injectors and slide in the new ones...

 

pe injector pic here. I have those

 

thnaks guys im really concenr with the regulator setup where the fuel pump is there telling me how its right above the housing and the return jus gos right back in i just want to see what it looks like so i can see how i am going to setup a fuel pressure regulator. pics would be greatly appreciated!

 

Does it come with some kind of fuel computer or is this kit relying on technosqaure? I heard the re-flashed ECU doesn't handle boost well, since it only has one 2D map, instead of a 3D like Splitsecond.

 

the ECU for my PE retards the timing, and is fuel adjusted for my boost levels. it has several different timing and fuel mapps not just 1.

 

Those are stock. PE should be light blue 380cc or tan 510cc.

Thanks for the closeup of the LIM though, I've been looking for one of those.

 

ooopps sorry I posted the wrong pic and I can't find one with the plenium off. Sorry CJ

 

The stock fuel system in the Z is what is called a Dead Head approach. There is no fuel pressure regulator or return line and the fuel pressure is regulated by the stock ECU altering the pump supply voltage.

Now, what PE do is the essence of simplicity. Quite clever, really. Firstly, they supply 40% larger than stock injectors. (stock WRX pieces actually, with small adaptor rings). Now, you would think this would make the car run stupid rich, at part throttle and it normally would.

However, they also supply an intake manifold sensitive fuel pressure regulator, which you install on the ENGINE SUPPLY side of the fuel pump (also supplied by PE), back down at the tank unit. You then run a manifold vacum line from the intake plenum all the the way back to the regulator.

This has the effect of LOWERING the fuel pressure at idle/part thottle sufficently for the exhaust O2 sensors to use the stock computor's correction tables, to be able to maintain correct air fuel ratios under these conditions. Then, when you go on boost, the vacuum disappears, ( in fact the regulator sees boost), the fuel pressure rises and there you are, safe on boost A/F ratios. Around 10:1, so a little rich if anything.

As I said at the start, very simple and quite clever. Not a solution for "killer" turbo installs, however, I doubt that is what PE had in mind,

Ed

 

close, but not quite right...

the system is returnless, but the voltage to the pump does not go up or down. it stays equal to battery voltage. the stock intank regulator keeps the fuel pressure at 3bar. (at ALL times).

m

 

3.5bar.